Q. 465.0( 1 Vote )

Find of each of the functions expressed in parametric form in


Answer :

We have given, x=3cosθ -2cos3θ , y=3sinθ-2sin3θ

Now, differentiate both the equation w.r.t. x then we get


x=3cosθ -2cos3θ



---(i)


And, for y=3sinθ-2sin3θ



---(ii)


Therefore,







Hence, dy/dx=cot θ


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