Question

If 2 sin 0 - 1 = 0, find :
(i) the value of 0 in degrees, where is an acu
angle ;
(ii) cos 0 + tan’ .​

Answer 1

Answer:

Step-by-step explanation:

Given : 2 sinA - 1 = 0.

⇒ 2 sin A = 1

⇒ sin A = 1/2

⇒ sin A = sin 30

⇒ A = 30.

Here, A is an acute angle.

Now,

(ii)

⇒ Sin A = sin 30

            = 1/2.