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Calc (Establishing Identities)

Establish the Identity

secθ-cosθ=sinθtanθ

Quote:

Originally Posted by sylla

Establish the Identity

secθ-cosθ=sinθtanθ

This one is not that bad.

Rewrite

$\frac{1}{cos(\theta)}-cos(\theta)$

$\frac{1-cos^{2}(\theta)}{cos(\theta)}$

Now, I assume you know what the numerator is equal to?

Finish up?

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