Question

plz prove the following trigonometric identity​

Answer 1

Answer:

take LCM

{(sin x + cos x)^2 + (sinx -cosx)^2}/(sin^2x - cos^2x)=

sin^2x +cos^2x + 2sinx.cosx + sin^2x + cos^2x - 2sinx.cosc/(sin^2x - cos^x)

1

(1 + 1)/(1-cos^2x - cos^2x) = 2/(1 - 2cos^2x)