Which of the following is equivalent to 1 − cos 2 θ/cos 2 θ?

Question

A. sec2 θ
B. (csc 2 θ ) -1
C. tan 2 θ
D. sin 2 θ
E. –1/sin2 θ

Answer 1

you must mean
(1 - cos^2 Ø) / cos^2 Ø

(the way you typed it, you would get 1-1 = 0 )

(1 - cos^2 Ø) / cos^2 Ø
= sin^2 Ø/cos^2 Ø
= tan^2 Ø

Answer 2

sorry, they're all squared θ not 2 θ