Question

5. Given that sin a=1/2 and cos b = 1/2, find the value of a+b​

Answer 1

given=>sina=1/2 and cosb =1/2

sina=1/2. (sin30•=1/2)

sin30•=1/2

a= 30•

cosa=1/2. (cos60•=1/2) cos60•=1/2.

a= 60•

therefore,a+b=30•+60•=90•