Question

if sinA =cosA,then A+B​

Answer 1

Answer:

2/root2

Step-by-step explanation:

sin A = cos B only when angle is 45°

sin 45 = cos 45 = 1/ root 2

A + B = 2/root 2

Answer 2

Answer:

sin A = cosA

= > cos(90 - A) = cosA

= >90 - A = A

= > 90 = A + A

90 = 2A

A = 90/2 = 45 °