differentiation

Question: If $x = a(t + \sin t)$and $y = a(1 - \cos t)$, then $\frac{{dy}}{{dx}}$ equals

1) $\tan (t/2)$

2) $\cot (t/2)$

3) $\tan 2t$

4) $\tan t$

Solution:

Explanation: Explanation

Implicit-function

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