# Trig Proving Identities help?

Prove the identity:

(cosθ - sinθ) / cosθ + sinθ) = sec 2θ - tan 2θ

please show work, thanks so much!

WILL AWARD BEST ANSWER!!!

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Prove the identity:

(cosθ - sinθ) / cosθ + sinθ) = sec 2θ - tan 2θ

please show work, thanks so much!

WILL AWARD BEST ANSWER!!!

Still have questions? Get your answers by asking now.