Question:
Write the derivative of $\sin x$ with respect to $\cos x$.
Solution:
We have to find $\frac{d}{d(\cos x)}(\sin x)$
So, we use the Chain Rule of Differentiation to evaluate this.
$\frac{d}{d(\cos x)}(\sin x)=\frac{d(\sin x)}{d x} \cdot \frac{d x}{d(\cos x)}$
$=\cos x \cdot \frac{1}{-\sin x}$
$=-\cot x($ Ans $)$
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