Use the quotient rule and the derivatives of the sine and cosine functions to prove that d/dx (cot x) = -csc2x

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 41E
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Use the quotient rule and the derivatives of the sine and cosine functions to prove that d/dx (cot x) = -csc2x

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Use the quotient rule and the derivative of sine and cosine to prove the derivative of csc x is -csc x cot x

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