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    Can anyone help me with this.
    Prove that, for any point P on the ellipse 9x^2 + 25y^2 = 225 , the normal at P bisects the angle APB where A & B are the foci. (4,0) and (-4,0). It's Q56 review ex in the heinemann P5 book.
    By the way, anyone else think that, if it's this hot, you shouldn't have to do exams?

    ahhh, i was stuck on this question too. My maths teacher said there is a way, but its extremely long winded. He said you don't need to know about that ****. I did find a method of doing it which was much simpler, but can't remember how no :rolleyes:

    anyways, i don't think we need to know that one (watch it come up now !)
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