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If 0102 are the eccentric angles of the ...

If `0_1``0_2` are the eccentric angles of the extremeties of a focal chord (other that the verticles) of the ellipse `x^2/a^2+y^2/b^2=1` `(agtb)` and e its its eccentricity. Then show that
`e cos ""((0_1+0_2))/2=cos""((0_1-0_2))/2`

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The correct Answer is:
`e cos ""((0_1+0_2))/2=cos""((0_1-0_2))/2`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-ELLIPSE-EXERCISE 4(B)
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  7. Find the condition for the line x cos alpha+y sin alpha=p to be a tang...

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  8. Find the equations of tangent and normal to the ellipse 2x^2+3y^2=11 a...

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  9. Find the equation to the tangents to the ellipse , x^2+2y^2+3 drawn fr...

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  10. Find the equations of tangents to the ellipse 2x^2+y^2=8 which are P...

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  11. Find the equations of tangents to the ellipse 2x^2+y^2=8 which are p...

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  12. Find the equations of tangents to the ellipse 2x^2+y^2=8 which are w...

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  13. A circle of radius 4, is concentric with the ellipse 3x^2+13y^2=78. Pr...

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  14. Show that the foot of the perpendicular drawn from the centre on any t...

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  15. Show that the locus of the feet of the perpendiculars drawn from foci ...

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