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If P(x , y) ,F(1) (3,0) , F(2) (-3, 0) "...

If `P(x , y) ,F_(1) (3,0) , F_(2) (-3, 0) " and " 16x^(2) + 25 y^(2) = 400` then show that `PF_(1)+PF_(2)=10`

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  14. The lengths of the major and minor axes of an ellipse are 2 a and 2b ...

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  15. Show that for an ellipse the straight line joining the upper end of on...

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  16. Find the equation of the auxiliary circle of the ellipse 16x^(2)+25y^...

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  17. If the eccentric angles of the two points on the ellipse (x^(2))/(a^(2...

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  19. Show tht the locus of the middle points of chords of the ellipse (x^(2...

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  20. If P(x , y) ,F(1) (3,0) , F(2) (-3, 0) " and " 16x^(2) + 25 y^(2) = 40...

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