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**Trigonometry Basic (URGENT) please help !**

**1. Homework Statement**

SIMPLIFY:

sin(x)/cot^2(x) - sin(x)/cos^2(x)

**2. Homework Equations**

Trigonometric identities I think

**3. The Attempt at a Solution**

I got sin(x)cot^-2(x) - sin(x) sec^2(x) ...

but the book says the answer is -sin(x).

Any starting points please? Thanks