Question

(cos Θ + cos Θ)2 + (cos Θ + cos Θ)2
Answer options:
A. sin2 Θ

B. 4

C. 8cos2 Θ

D. cos2 Θ

Answer 1

@ganeshie8 @hartnn

Answer 2

(cos Θ + cos Θ)2 = (2cosΘ)^2 = 4cos^2Θ

Answer 3

\[(2\cos \theta)^2+(2\cos \theta)^2=4\cos^2+4\cos^2=8\cos^2 \theta\]