Find the value of \frac{d y}{d x} at \theta=\frac{\pi}{3}, if x=\cos \theta-\cos 2 \theta, y= \sin \theta- \sin 2 \theta.

CBSE Class 12 Math 2020 Outside Delhi Set 1 Solved Paper

Question : 22 of 36

Marks: +1, -0

Find the value of

\;{d y}/{d x}

θ=\;{π}/{3}

, if

x=\cos θ-\cos 2 θ, y= sin \;θ- sin \;2 θ

Solution:

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