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The condition that the chord a x cos alp...

The condition that the chord a `x cos alpha +y sin alpha -p=0" of "x^(2)+y^(2)-a^(2)=0` subtend a right angle at the centre of the circle is

A

`a^(2)-2p^(2)`

B

`p^(2)=2a^(2)`

C

p=2a

D

`a^(2)-2p^(3)`

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A
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DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1A(Circle)
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  4. An equilateral triangle is inscribed in the circle x^(2)+y^(2)=a^(2). ...

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  5. If an equilateral triangle is inscribed in the circle x^(2)+y^(2)-6x-4...

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  8. The equation of the circle which passes through the origin and cuts of...

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  9. The equation of the circle concentric with x^(2)+y^(2)-2x+8y-23=0 and ...

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  10. The equation of the circle concentric with x^(2)+y^(2)-6x+4y-3=0 and h...

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  11. The equation of the circle concentric with the circle x^(2)+y^(2)-6x+1...

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  12. The equation of the circle passing through the points of intersection ...

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  13. The equation of the circle passing through (0,0), (0,a), (a,0) is

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  14. The equation of the circle passing through the points (1, 1),(2,-1),(3...

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  15. The circle passing through the points (1, t), (t, 1) and (t, t) for al...

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  16. The centre of the circle passing through the points (a,b),(a,-b),(a+b,...

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  17. The points (1, 1), (- 6, 0), (-2, 2). (-2,-8) are

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  18. If the points (2, 3), (0, 2), (4, 5) and (0, t) are concyche, then t=

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  19. The points (2k, 3k), (1, 0), (0, 1) and (0, 0) lie on a circle for

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  20. If (m(1),1//m(1)), i=1,2,3,4 are concyclic points, then the value of m...

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