## ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 19 Trigonometric Tables Ex 19

ML Aggarwal Class 10 Solutions for ICSE Maths Chapter 19 Trigonometric Tables Ex 19

Question 1.

Find the value of the following:

(i) sin 35° 22′

(ii) sin 71° 31′

(iii) sin 65° 20′

(iv) sin 23° 56′.

Solution:

Question 2.

Find the value of the following:

(i) cos 62° 27′

(ii) cos 3° 11′

(iii) cos 86° 40′

(iv) cos 45° 58′.

Solution:

Question 3.

Find the value of the following:

(i) tan 15° 2′

(ii) tan 53° 14′

(iii) tan 82° 18′

(iv) tan 6° 9′.

Solution:

Question 4.

Use tables to find the acute angle θ, given that:

(i) sin θ = -5789

(ii) sin θ = -9484

(iii) sin θ = -2357

(iv) sin θ = -6371.

Solution:

Question 5.

Use the tables to find the acute angle θ, given that:

(i) cos θ = .4625

(ii) cos θ = .9906

(iii) cos θ = .6951

(iv) cos θ = .3412.

Solution:

Question 6.

Use tables to find the acute angle θ, given that:

(i) tan θ = .2685

(ii) tan θ = 1.7451

(iii) tan θ = 3.1749

(iv) tan θ = .9347

Solution:

Question 7.

Using a trigonometric table, find the measure of the angle A when sin A = 0.1822.

Solution:

Question 8.

Using tables, find the value of 2 sin θ – cos θ when (i) θ = 35° (ii) tan θ = .2679.

Solution:

Question 9.

If sin x° = 0.67, find the value of

(i) cos x°

(ii) cos x° + tan x°.

Solution:

Question 10.

If θ is acute and cos θ = .7258, find the value of (i) θ (ii) 2 tan θ – sin θ.

Solution: