Question

if A+B=90°,then sin^2A+cos^2B=​

Answer 1

Answer:

A+B =90

then

A=90- B

According to the problem

sin(2A)+cos(2B)

sin(2×{90-B})+cos(2B)

sin(180-2B)+ cos(2B)

sin(2B)+cos(2B)