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If x=a(theta-sintheta) and y= a (1+costh...

If `x=a(theta-sintheta)` and `y= a (1+costheta)` then prove that `(dy)/(dx)= -cot((theta)/(2))`

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The correct Answer is:
`tan ((theta)/2)`
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SUNSTAR PUBLICATION-SUPPLEMENTARY EXAM QUESTION PAPER JULY -2014-PART-C
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