1.

If `x=a(theta+sintheta)` and `y=a(1-costheta)`, find `dy//dx`.A. `(sintheta)/(1+costheta)`B. `(costheta)/(1+sintheta)`C. `(1+costheta)/(sintheta)`D. `(sintheta)/(1-costheta)`

Answer» Correct Answer - 1
`(dx)/(d theta)=a(1+costheta),(dy)/(d theta)=a(0+sintheta)`
`(dy)/(dx)=(dy)/(d theta)//(d theta)/(dx)=(asintheta)/(a(1+costheta))`


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