Question

If x + y = SinQ and x - y = CosQ then x²+y²= ____​

Answer 1

Answer:

Answer

Given x=a sinθ and y=a cosθ

x

2

+y

2

=(asinθ)

2

+(acosθ)

2

=a

2

(sin

2

θ+cos

2

θ)

=a

2