Question

if sin A=½ and cos A=½ then A+B=​

Answer 1

Given

Sin A = 1/2

Sin A = Sin 30°

Now,

A = 30° ----(1)

Cos B = 1/2

Cos B = Cos 60°

B = 60° ----(2)

Now,

Value of (A + B) = 30° + 60° [ from (1)&(2) ] = 90° Therefore,. A + B = 90°