Find the equation of the tangent to the curve `x=theta+sintheta` , `y=1+costheta` at `theta=pi//4` .

Explanation

To find equation of the tangent, we need slope and one point on the tangent. point on the tangent at `\theta=\frac{\pi}{4}`
$$ x=\frac{\pi}{4}+\sin \left(\frac{\pi}{4}\right)=\frac{\pi}{4}+\frac{1}{\sqrt{2}} $$
and
$$ \mathrm{y}=1+\cos \left(\frac{\pi}{4}\right)=1+\frac{1}{\sqrt{2}} $$
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