Question

If a,b
are acute angle such that sina =Cosby then a+b=

Answer 1

Answer:

A+B = 90°

Step-by-step explanation:

Given,

If A,B are acute angles,

sinA = cosB

sinA = sin(90°-B)

A = 90°-B

A+B = 90°

:. A+B = 90°.