(cos x+sin x)^2/(cos x-sin x)^2=... a. 1/(1-cos 2x) b.

(cos x+sin x)^2/(cos x-sin x)^2=... a. 1/(1-cos 2x) b. 1/(1-sin 2x) c. (1+cos 2x)/(1-cos 2x) d. (1+2 sin x)/(1-2 sin x) e. (1+sin 2x)/(1-sin 2x)