Question

If A + B = 90°, sin A = a and sin B = b then prove a^2 + b^2 = 1

Answer 1

a^2 + b^2
sin^A + sin^B
sin^A + sin^(90-A)
sin^A + cos^B
=1

Answer 2

Given A+B=90°
sinA=a , Sin B=b
L.H.S =( SinA)^2 + (Sin B)^2
=