Question

if sin A= 1/2 and cos B =1/2 then the value of (A+B) is 0 (a) 0° b) 30° c) 60° d) 90°​

Answer 1

Answer:

1/2) = 30° angle opposite to 30° ia 1/2 × hypotenuse only for sin. cos (1/2) = 60° angle opposite to 60° is 1/2× hypotenuse. only for Cos

Answer 2

SinA = 1/2
SinA = Sin30

A = 30

CosB = 1/2
CosB = Cos60

B = 60

A+B = 30 + 60 = 90 so option (d)