Question

sin a is equal to cos B then prove that a + b is equal to 90 degree​

Answer 1

SinA=CosB

SinA=Sin(90-B)

A=90-B

A+B=90

Hence,proved

Answer 2

Answer:

sin A=cos B

sinA=cos(90-A)

cos(90-A)=cosB

90-A=B

90=A+B

hence proved