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# help! p5 geometry question watch

1. non of my attempt prevailed.. could anyone help me?

It's the question on p5 Revuew Exercise Q.16

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The foci of the ellipse with equation

x²/a² + y²/b²

are S, S'. Show that the normal at a point P on the ellipse is equally inclined to the lines SP, S'P.
The perpendicular from the centre O of the ellipse to the tangent at P meets SP, produced if necessary, in G. Show that the locus of G is a circle of radius a whose centre is S.

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i always seem to be asking questions lol
2. wow thanks!

didn't realise someone has already asked the question
3. (Original post by hihogyu)
wow thanks!

didn't realise someone has already asked the question
Another Ellipse reflection property proof here:

http://mcraefamily.com/MathHelp/Geom...Reflection.htm

This is an atrocious question!

Aitch
4. (Original post by Aitch)
This is an atrocious question!
Agreed. It's pure evil.

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