M l aggarwal understanding icse mathematics class 9 Solutions for Chapter 17 trigonometric ratios

Exercises in Chapter 17 trigonometric ratios Grade 9

Trigonometric Ratios Exercise 17

Questions in Trigonometric Ratios Exercise 17

(a) From the figure (1) given below, find the values of: (i) sin θ

(ii) cos θ

(iii) tan θ

(iv) cot θ

(v) sec θ

(vi) cosec θ

(b) From the figure (2) given below, find the values of:

(i) sin θ

(ii) cos θ

(iii) tan θ

(iv) cot θ

(v) sec θ

(vi) cosec θ

(a) From the figure (1) given below, find the values of:

(i) sin B

(i) cos C

(iii) sin B + sin C

(iv) sin B cos C + sin C cos B

(b) From the figure (2) given below, find the values of……..

(1) sin B

(ii) cos C

From the figure (1) given below, find the value of sec …

(b) From the figure (2) given below, find the values of

(i) sin x

(ii) cot x

$\text { (iii) } \cot ^{2} x-\operatorname{cosec}^{2} x$

(iv) sec y

(v) tan ……

In a right-angled triangle, it is given that angle A is an acute angle and that

Tan A=5/12 Find the values of:

(i) cos A

(ii) cosec A- cot A.

In triangle ABC, AB = 15 cm, AC = 15 cm and BC = 18 cm.

If sin …….=3/5 and …….

. If tan = 4/3

find the value of sin .. cos … (both sin and cos are Positive)

If cosec = √5 and is less than 90, find the value of cot - Cos

Given sin = p/q find sin + cos

If O is an acute angle and tan = 8/15 then find sec + cosec

Given A is an acute angle and 13 sin A 5, evaluate: (5 sin A – 2 cos A)/ tan A

Given A is an acute angle and cosec A = √2, find the value of

$2 \sin ^{2} A+3 \cot ^{2} A /$

$\left(\tan ^{2} A-\cos ^{2} A\right)$

Was This helpful?

Chapters in this book

Rational and Irrational Numbers

Compound Interest

Expansions

Factorization

Simultaneous Linear Equations

Problems on Simultaneous Linear Equations

Quadratic Equations

Indices

Logarithms

Triangles

Mid Point Theorem

Pythagoras Theorem

Rectilinear Figures

Theorems on Area

Circle

Mensuration

Trigonometric Ratios

Trigonometric Ratios and Standard Angles

Coordinate Geometry

Statistics