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Forum Index -> Analytical Geometry like the article? email it to a friend.  
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Sivvar (29)

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the locus of point of intersection of tangents to an ellipse at two points, the sum of whose eccentric angles is constant, is
(a) straight line
(b) parabola
(c) ellipse
(d) hyperbola

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rhd92781 (686)

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if eccentric angles r w n v, then point of intersection of tangents is
(acos(w+v/2)/cos(w-v/2), bsin(w+v/2)/cos(w-v/2))
ifw+v=k
x/acos(k/2)=y/bsin(k/2)
its a straight line

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Sivvar (29)

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right ans..'m gettin the 2 coordinates opp to wt u gt..n denominator pt of intersection also as sin(w-v)/2..but ans is straight line..right on..

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