Question

If a and b are tow acute angles such that sin a =cos b then (a+b)=?

Answer 1

Answer:

Step-by-step explanation:

90 degree because at 45 degree both sin and cos give same value

Answer 2

Answer:

$\sin(a) = \cos(b) \\ \cos(90 - a) = \cos(b) \\ equating \: cos \: on \: both \: side \: \\ then \\ (90 - a) = b \\ 90 = a + b \\ a + b = 90$