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The length of the chord of the parabola ...

The length of the chord of the parabola `x^(2)=4ay` passing through the vertex and having slope tan `alpha` is

A

`4a cosec alpha cot alpha`

B

`4a tan alpha sec alpha`

C

`4a cos alpha cot alpha`

D

`ta sin alpha tan alpha`

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PARABOLA-EXERCISE 1 A
  1. The locus of the midpoints of the focal chords of the parabola y^(2)=4...

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  2. If a chord of the parabola y^(2)=4x passes through its focus and makes...

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  3. The length of the chord of the parabola x^(2)=4ay passing through the ...

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  4. In the parabola y^(2)= 4ax the length of the chord passing through th...

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  5. The length of chord intercepted by the parabola y=x^(2)+3x on the line...

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  6. If the line y = mx + a meets the parabola x^(2)=4ay in two points whos...

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  7. Prove that the portion or the tangent intercepted,between the point of...

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  8. The subnormal of the parabola y^(2)=4ax is equal to

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  9. If a normal chord of a puint on the parabola y^(2) = 4ax, subtends a r...

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  10. If the chord y = mx +c subtends a right angle at the vertex of the par...

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  11. If P is a point on the parabola y^(2)=8x and A is the point (1,0) then...

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  12. The locus of the point of intersection of two tangents to the parabola...

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  13. The tangents at the points (at(1)^(2),2at(1)) , (at(2)^(2),2at(2)) on ...

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  14. The tangent to y^(2)=ax makes an angle 45^(@) with x-axis . Then its ...

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  15. The tangents at the points (at(1)^(2),2at(1)) , (at(2)^(2),2at(2)) on ...

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  16. If P (at(1)^(2),2at(1)) and Q (at(2)^(2),2at(2)) are two variable poin...

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  17. The length of the chord of contact of tangents drawn from (x(1),y(1)) ...

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  18. The area of the triangle formed by the tangents and chord of contact f...

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  19. If y(1),y(2) and y(3) are the ordinates of the vertices of a triangle ...

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  20. The area of the triangle inscribed in the parabola y^(2)=4x the ordina...

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