RD SHARMA Solutions for Class 10 Maths Chapter 11 - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise Ex. 11.1

Question 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 5

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 5

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 6

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 6

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 9

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 9

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 11

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 11

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 13

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 13

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 14

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 14

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 15

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 15

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 16

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 16

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 17

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 17

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 18

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 18

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 19

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 19

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 20

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 20

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 21

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 21

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 22

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 22

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 23(i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 23(i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 23(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 23(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 24

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 24

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 25

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 25

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 26

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 26

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 27

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 27

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 28

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 28

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 29

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 29

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 30

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 30

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 31

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 31

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 32

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 32

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 33

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 33

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 34

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 34

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 35

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 35

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 36

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 36

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 37. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 37. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 37. ii

Prove the following trigonometric identities:

 

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 37. ii

L.H.S.,

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 38(i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 38(i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 38(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 38(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 38(iii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 38(iii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 38(iv)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 38(iv)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 39

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 39

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 40

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 40

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 41

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 41

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 42

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 42

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 43

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 43

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 44

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 44

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 45

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 45

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 46

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 46

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 47 (i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 47 (i)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 47 (ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 47 (ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 47 (iii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 47 (iii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 47(iv)

Prove that:

 

(sin θ + cos θ)(tan θ + cot θ) = sec θ + cosec θ

Solution 47(iv)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 48

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 48

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 49

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 49

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 50

Prove that:

 

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 50

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 51

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 51

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 52

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 52

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 53

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 53

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 54

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 54

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 55. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 55. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 55. ii

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 55. ii

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 56

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 56

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 57

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 57

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 58

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 58

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 59

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 59

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 60

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 60

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 61

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 61

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 62

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 62

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 63

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 63

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 64

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 64


Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 65. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 65. i

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 65(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 65(ii)

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 66

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 66

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 67

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 67

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 68

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 68

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 69

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 69

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 70

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 70

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 71

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 71

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 72

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 72

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 73

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 73

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 74

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 74


Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 75

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 75

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 76

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 76

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 77

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 77

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 78

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 78

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 79

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 79

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 80

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 80

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 81

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 81

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 82

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 82

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 83

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 83

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 84

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 84

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 85

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 85

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 86

If sin θ + 2 cos θ = 1 prove that 2 sin θ - cos θ = 2.

Solution 86

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise Ex. 11.2

Question 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 5

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 5

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 6

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 6

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 9

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 9

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 11

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 11

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 13

If 2sin2 θ - cos2 θ = 2, then find the value of θ.

Solution 13

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 14

If Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identitiestan θ - 1 = 0, find the value of sin2θ - cos2 θ.

Solution 14

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise 11.56

Question 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 1

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 2

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 3

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 4

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 5

sec4 - sec2A  is equal to

(a)  tan2A -  tan4A     (b) tan4A -  tan2

(c) tan4A + tan2A      (d) tan2A -  tan4A  

Solution 5

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 6

cos4A-sin4A is equal  to

(a)  2cos2A+1    (b) 2cos2A-1   

(c)  2sin2A-1     (d) 2sin2A+1  

Solution 6

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise 11.57

Question 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 7

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 8

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 9

The value of (1+cotθ – cosecθ )  (1+tanθ + secθ) is

 (a) 1     (b) 2      (c) 4      (d) 0

Solution 9

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 10

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 11

(cosecθ - sinθ) (secθ - cosθ) (tanθ + cotθ) is equal

(a) 0          (b)   1       (c)-1        (d) None of thee

Solution 11

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 12

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 13

If  x =a secθ  and  y=b tanθ  then  b2x2a2y2=

(a) ab      (b) a- b2       (c) a+ b2    (d) a2b2

Solution 13

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 14

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 14

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 15

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 15

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 16

If acosθ + bsinθ = 4 and asinθ-bcosθ = 3, then a2+b2=

(a) 7    (b) 12      (c) 25      (d) None of these

Solution 16

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 17

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 17

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 18

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 18

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 19

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 19

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise 11.58

Question 20

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 20

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 21

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 21

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 22

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 22

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 23

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 23

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 24

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 24

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 25

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 25

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 26

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 26

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 27

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 27

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 28

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Solution 28

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 29

If sin θ - cos θ = 0, then the value of sin4 θ + cos4 θ is

 

  1. 1
  2. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
  3. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
  4. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
Solution 29

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 30

The value of sin (45° + θ) - cos (45° - θ) is equal to

 

  1. 2 cos θ
  2. 0
  3. 2 sin θ
  4. 1
Solution 30

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 31

If ΔABC is right angled at C, then the value of cos (A + B) is

 

  1. 0
  2. 1
  3. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
  4. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
Solution 31

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Chapter 11 - Trigonometric Identities Exercise 11.59

Question 32

If cos 8θ = sin θ and 8θ < 90°, then the value of tan 6θ is

  1. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
  2. Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities
  3. 1
  4. 0
Solution 32

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities

Question 33

If cos (α + β) = 0, then sin (α  -  β) can be reduced to

 

  1. cos β
  2. cos
  3. sin α
  4. sin 2α
Solution 33

Rd-sharma Solutions Cbse Class 10 Mathematics Chapter - Trigonometric Identities