Question

If x=a cos theta and y=b sin theta, find dy/dx?

Answer 1

Is that right?.. This is the right answer?

Answer 2

Hey there !!!!

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x= acosθ

Differentiating wrt to θ

dx/dθ = -asinθ--Equation 1

y=bsinθ

differentiating wrt to θ

dy/dθ = bcosθ---Equation 2

Equation 2/ Equation 1

= dy/dθ/dx/dθ = bcosθ/-asinθ

=dy/dx = -bcotθ/a

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Hope this helped you.................