Question

Prove that (Sin45+cos45)^=2

Answer 1

Step-by-step explanation:

LHS:

sin45=cos45=1/sq.root(2)

Therefore (sin45+cos45)^2=[1/sq.root(2)+1/sq.root(2)]^2

=[2/sq.root(2)]^2

=4/2

=2

=RHS

Hence proved.