MathAnalysisCalculusDerivatives

Derivatives of trigonometric functions

A derivative of a cotangent

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What is a derivative of $\cot x$ equal to?

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\dfrac{1}{\cos^2 x}

\dfrac{1}{\sin^2 x}

-\dfrac{1}{\cos^2 x}

-\dfrac{1}{\sin^2 x}

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