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Eccentric Angle
For the ellipse:
$$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$$
a point can be represented as:
$$P(a\cos\theta,b\sin\theta)$$
where $$\theta$$ is called the eccentric angle of the point.
Usage
- Used for parametric representation, tangent, normal and chord problems.
