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Tangent to a Circle at a Parametric Point
For:
$$x^2+y^2=a^2$$
the point:
$$(a\cos\theta,a\sin\theta)$$
has tangent:
$$x\cos\theta+y\sin\theta=a$$
Usage
- Used when the point of contact is given parametrically.
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Tangent to a Circle at a Parametric Point
For:
$$x^2+y^2=a^2$$
the point:
$$(a\cos\theta,a\sin\theta)$$
has tangent:
$$x\cos\theta+y\sin\theta=a$$
Usage
- Used when the point of contact is given parametrically.
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