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A Cos X + B Sin X + C Sin X - Mathematics

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Question

\[\frac{a \cos x + b \sin x + c}{\sin x}\]

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Solution

\[\frac{d}{dx}\left( \frac{a \cos x + b \sin x + c}{\sin x} \right)\]
\[ = \frac{d}{dx}\left( \frac{a \cos x}{\sin x} \right) + \frac{d}{dx}\left( \frac{b \sin x}{\sin x} \right) + \frac{d}{dx}\left( \frac{c}{\sin x} \right)\]
\[ = a\frac{d}{dx}\left( cot x \right) + \frac{d}{dx}\left( b \right) + c\frac{d}{dx}\left( \cos ec x \right)\]
\[ = - a \cos e c^2 x + 0 - c \cos ec x cot x\]
\[ = - a \cos e c^2 x - c \cos ec x cot x\]

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Chapter 30: Derivatives - Exercise 30.3 [Page 34]

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RD Sharma Mathematics [English] Class 11
Chapter 30 Derivatives
Exercise 30.3 | Q 11 | Page 34

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