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.
Chapter 26 - Trigonometrical Ratios Exercise Ex. 26.1
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:
- sin P
- cot2 P - cosec2 P
- 4sin2 R - 1/tan2 P
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
In the given figure, AD is the median on BC from A. If AD = 8 cm and BC = 12 cm, find the value of
c.tan x. cot y
In a right-angled triangle PQR, ∠PQR = 90°, QS ⏊ PR and tan R =, find the value of
a. sin ∠PQS
b. tan ∠SQR
In the given figure, AC = 13cm, BC = 12 cm and ∠B = 90o. Without using tables, find the values of:
In tan Ө = 1, find the value of 5cot2Ө + sin2Ө - 1.
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
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°.
Find the values of
a. 2 tan ∠BAC - sin ∠BCD
b. 3 - 2 cos ∠BAC + 3 cot ∠BCD
If 4 sin Ө = 3 cosӨ, find
a.tan2Ө + cot2Ө
If 35 sec Ө = 37, find the value of sin Ө - sin Ө tan Ө.
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