Question

Given that sin a=1/2, cos B =1/2,
then value of (a+B) is
(a) 0°
(b) 30"
(c) 60°
(d) 90°​

Answer 1

Ans is 90⁰

Step-by-step explanation:

sin1/2 = sin30⁰

cos1/2 = cos60⁰

here degrees are values of a & b

that means , a+ b = 30⁰ + 60⁰ = 90⁰