is a point on the auxiliary circle corresponding to the point
of the ellipse
. If
is the foot of the perpendicular dropped from the focus
onto the tangent to the auxiliary circle at
then the
is:
Isosceles
Equilateral
Right angled
Right isosceles
Equation of tangent in parametric form -
- wherein
Tangent a point to
Standard equation -
- wherein
Semi major axis
Semi minor axis
Tangent at is ,
also
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