9709 P33 - Jun 2012 - Q3
1631
The parametric equations of a curve are
\(x = \sin 2\theta - \theta\), \(y = \cos 2\theta + 2 \sin \theta\).
Show that \(\frac{dy}{dx} = \frac{2 \cos \theta}{1 + 2 \sin \theta}\).
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