Ask Me Help Desk - cos^3-sin^3

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cos^3-sin^3

I need to verify the identity cos^3-sin^3/cos-sin = 1+sincos

There is a difference of cubes on the numerator on the left side that you can use.

Basically, it's:
$a^3 - b^3 = (a-b)(a^2+ab+b^2)$

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