FRANK Solutions for Class 9 Maths Chapter 26 - Trigonometrical Ratios

Refer to Frank Solutions for ICSE Class 9 Mathematics Chapter 26 Trigonometrical Ratios to practise trigonometry basics. Understand the steps to find values of trigonometric rations using the value of a given trigonometric ratio. Also, carefully study our textbook solutions to understand the application of Pythagoras theorem to solve problems.

Practise TopperLearning’s Frank solutions to solve chapter-related textbook questions with or without the support of trigonometric tables. In addition, other ICSE Class 9 Maths syllabus topics along with Chapter 26 can be revised using Selina solutions and concept videos.

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Chapter 26 - Trigonometrical Ratios Exercise Ex. 26.1

Question 1
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 1
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 2
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 2
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 3
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 3
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 4
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 4
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 5
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 5
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 6
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 6
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 7
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 7
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 8
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 8
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 9
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Solution 9
Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios
Question 10

In the given figure, PQR is a triangle, in which QS PR, QS = 3 cm, PS = 4 cm and QR = 12 cm, find the value of:

  1. sin P
  2. cot2 P - cosec2 P
  3. 4sin2 R - 1/tan2 P

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 10

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 11

In an isosceles triangle ABC, AB = BC = 6 cm and B = 90°. Find the values of

a. cos C

b. cosec C

c. cos2 C + cosec2 C

Solution 11

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Question 12

In the given figure, AD is the median on BC from A. If AD = 8 cm and BC = 12 cm, find the value of

a.sin x

b.cos y

c.tan x. cot y

d.Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 12

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Question 13

In a right-angled triangle PQR, PQR = 90°, QS PR and tan R =Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios, find the value of

a. sin PQS

b. tan SQR

Solution 13

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 14

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 14

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 15

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 15

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 16

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 16

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 17

In the given figure, AC = 13cm, BC = 12 cm and B = 90o. Without using tables, find the values of:

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 17

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 18

In tan Ө = 1, find the value of 5cot2Ө + sin2Ө - 1.

Solution 18

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 19

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 19

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 20

In the given figure, AD is perpendicular to BC. Find:

a.5 cos x

b.15 tan y

c.5 cos x - 12 sin y + tan x

d.Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 20

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Question 21

In a right-angled triangle ABC, B = 90°, BD = 3, DC = 4, and AC = 13. A point D is inside the triangle such as BDC = 90°.

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Find the values of

a. 2 tan BAC - sin BCD

b. 3 - 2 cos BAC + 3 cot BCD

Solution 21

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 22

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 22

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 23

If 4 sin Ө = 3 cosӨ, find

a.tan2Ө + cot2Ө

b.Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 23

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 24

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 24

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 25

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 25

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 26

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 26

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 27

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 27

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 28

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 28

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 29

If 35 sec Ө = 37, find the value of sin Ө - sin Ө tan Ө.

Solution 29

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

 

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 30

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 30

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 31

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 31

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 32

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 32

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 33

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 33

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 34

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 34

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 35

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 35

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 36

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 36

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 37

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 37

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 38

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 38

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 39

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 39

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 40

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 40

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Question 41

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios

Solution 41

Frank Solutions Icse Class 9 Mathematics Chapter - Trigonometrical Ratios