If we examine the two tangents to an inner conic which pass through a point on the outer conic, we see that each makes the same angle with the outer conic.
Further we see that the triangle formed by the three points of contact has an area which is independent of the location of the outer point (parameter t).
Expressions
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| Area |  |
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| Angle 1 | |
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| Angle 2 | |
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