Question

Find the value of angle A, if :
(i) sin 2A = 1 (ii) 2 sin 2A = 1
(iii) 2 sin A = 1​

Answer 1

Step-by-step explanation:

(i) Sin 2A = 1

Sin 2A = Sin 90

2A = 90

A = 90/2

A= 45

(ii) 2 Sin 2A = 1

2 Sin 2A = Sin 90

Sin 2A = 1/2 Sin 90

2A = 90/2

A = 90/4 = 22.5

(iii) 2Sin A = 1

2 Sin A = Sin 90

Sin A = 1/2 Sin 90

A = 90 /2

A= 45