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Questions  >>  CBSE XII  >>  Math  >>  Model Papers
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Q)

If \( x = a \bigg( \cos \theta +\ log \tan\large \frac{\theta}{2} \bigg)\) and \( y = a\sin\: \theta\), find the value of \( \large\frac{dy}{dx}\) at \( \theta = \large\frac{\pi}{4} \).

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