Q. 144.3( 7 Votes )

Find , when

If x = 2cos θ – cos 2θ and y = 2sin θ – sin 2θ, prove that

Answer :

as x = 2cos θ – cos 2θ


Differentiating it with respect to using chain rule ,




……(1)


And, y = 2sin θ – sin 2θ


Differentiating it with respect to using chain rule ,





……(2)


dividing equation (2)by equation (1),










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