Question

11. If sin a = 1/2 and cos ß= 1/2 then a + b = ...​

Answer 1

Answer:

sin a=1/2

sin a= sin 30°

a=30°

cos b=1/2

cos b=cos 60°

b=60°

So,a+b=30+60=90°.

Answer 2

Answer:

Step-by-step explanation:

Sin A= 1/2= Sin 30°

Therefore, A = 30°

Cos B =1/2= Cos60°

Therefore, B = 60°

A+B = 30°+60°=90°