Conics help please (1 Viewer)
- Thread starter Aysce
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It is easier and smarter to show that the co-ords of T satisfy the eqns of tangents at P and at Q. Usually much harder to do it by finding the co-ords of point of intersection of the two tangents(by solving for simultaneous eqns).
For example, for tangent at P:
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Yeah that is a better way.It is easier and smarter to show that the co-ords of T satisfy the eqns of tangents at P and at Q. Usually much harder to do it by finding the co-ords of point of intersection of the two tangents. e.g. for tangent at P:
 = \frac {2ct_1 (t_1 + t_2)}{t_1 + t_2} = 2ct_1 = RHS )
For this particular question, finding point of intersection is not that much harder though.Wow? Tried for Point of intersection but failed miserablyThanks Drongo!
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