Find the equation of normal to the curve `x=cos theta, y = sin theta" at point "theta = pi/4*`

Explanation

To find the equation of the normal to the curve defined by \( x = \cos \theta \) and \( y = \sin \theta \) at the point where \( \theta = \frac{\pi}{4} \), we can follow these steps:

### Step 1: Find the coordinates of the point on the curve at \( \theta = \frac{\pi}{4} \)

Using the parametric equations:
\[ x = \cos \theta \]
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