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

Page / Exercise

## Chapter 11 - Trigonometric Identities Exercise Ex. 11.1

Solution 1

Solution 2

Solution 3

Solution 4

Solution 5

Solution 6

Solution 7

Solution 8

Solution 9

Solution 10

Solution 11

Solution 12

Solution 13

Solution 14

Solution 15

Solution 16

Solution 17

Solution 18

Solution 19

Solution 20

Solution 21

Solution 22

Solution 23(i)

Solution 23(ii)

Solution 24

Solution 25

Solution 26

Solution 27

Solution 28

Solution 29

Solution 30

Solution 31

Solution 32

Solution 33

Solution 34

Solution 35

Solution 36

Solution 37. i

Solution 37. ii

L.H.S.,

Solution 38(i)

Solution 38(ii)

Solution 38(iii)

Solution 38(iv)

Solution 39

Solution 40

Solution 41

Solution 42

Solution 43

Solution 44

Solution 45

Solution 46

Solution 47 (i)

Solution 47 (ii)

Solution 47 (iii)

Solution 47(iv)

Solution 48

Solution 49

Solution 50

Solution 51

Solution 52

Solution 53

Solution 54

Solution 55. i

Solution 55. ii

Solution 56

Solution 57

Solution 58

Solution 59

Solution 60

Solution 61

Solution 62

Solution 63

Solution 64

Solution 65. i

Solution 65(ii)

Solution 66

Solution 67

Solution 68

Solution 69

Solution 70

Solution 71

Solution 72

Solution 73

Solution 74

Solution 75

Solution 76

Solution 77

Solution 78

Solution 79

Solution 80

Solution 81

Solution 82

Solution 83

Solution 84

Solution 85

Solution 86

Solution 23 (iii)

To prove:

Consider LHS

= RHS

Hence, proved.

## Chapter 11 - Trigonometric Identities Exercise Ex. 11.2

Solution 1

Solution 2

Solution 3

Solution 5

Solution 6

Solution 7

Solution 8

Solution 9

Solution 10

Solution 11

Solution 12

Solution 13

Solution 14

Solution 4

Given:

Consider,

… [Multiplying and dividing by tan θ]

Solution 1

Solution 2

Solution 3

Solution 4

Solution 5

Solution 6

Solution 7

Solution 8

Solution 9

Solution 10

Solution 11

Solution 12

Solution 13

Solution 14

Solution 15

Solution 16

Solution 17

Solution 18

Solution 19

Solution 20

Solution 21

Solution 22

Solution 23

Solution 24

Solution 25

Solution 26

Solution 27

Solution 28

Solution 29

Solution 30

Solution 31

## Chapter 11 - Trigonometric Identities Exercise 11.59

Solution 32

Solution 33

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