Normal at a Parametric Point of a Translated Ellipse

Rarely Tested

Normal at a Parametric Point of a Translated Ellipse

At:

$$P(h+a\cos\theta,k+b\sin\theta)$$

the normal is:

$$a(x-h)\sec\theta-b(y-k)\csc\theta=a^2-b^2$$

Usage

- Used for parameter-based normal problems involving a translated ellipse.

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