Posted by **Sangita** on Wednesday, March 28, 2012 at 8:37am.

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

A. sec2 θ

B. (csc 2 θ ) -1

C. tan 2 θ

D. sin 2 θ

E. –1/sin2 θ

- Trigonometry -
**Reiny**, Wednesday, March 28, 2012 at 8:41am
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

- Trigonometry -
**Sangita**, Wednesday, March 28, 2012 at 8:42am
sorry, they're all squared θ not 2 θ

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