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The equation of the tangents drawn from ...

The equation of the tangents drawn from the origin to the circle `x^(2)+y^(2)-2rx-2hy+h^(2)=0` are

A

x=0, y=0

B

`y=0, (h^(2)-r^(2))x-2rhy=0`

C

`x=0, (h^(2)-r^(2))x-2rhy=0`

D

`x=0, (h^(2)-r^(2))x+2rhy=0`

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-CIRCLES-Exercise
  1. Find the point of intersection of the following pairs of lines: b x+a ...

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  2. Two perpendicular tangents to the circle x^(2) + y^(2) =a^(2) meet at ...

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  3. The equation of the tangents drawn from the origin to the circle x^(2)...

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  4. If from any point P on the circle x^2+y^2+2gx+2fy+c=0, tangents are dr...

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  5. If the equation of a given circle is x^2+y^2=36 , then the length of t...

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  6. Find the angle which the common chord of x^2+y^2-4x-4y=0 and x^2+y^2=1...

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  7. Show that the equation of the circle passing through (1, 1) and the ...

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  8. The tangents to x^2+y^2=a^2 having inclinations alpha and beta interse...

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  9. Find the equation of a circle with center (4, 3) touching the circle x...

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  10. Find the number of common tangents that can be drawn to the circles...

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  11. If 3x+y=0 is a tangent to a circle whose center is (2,-1) , then find ...

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  12. Find the condition if the circle whose equations are x^2+y^2+c^2=2a x ...

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  13. about to only mathematics

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  14. The condition that the chord xcosalpha+ysinalpha-p=0 of x^2+y^2-a^2=0 ...

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  15. The locus of the centres of the circles which touch x^2+y^2=a^2 and x^...

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  16. Let P be a point on the circle x^2+y^2=9,Q a point on the line 7x+y+3=...

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  17. Two lines through (2, 3) from which the circle x^2+y^2 =25 intercepts ...

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  18. A line meets the coordinate axes at A and B . A circle is circumscribe...

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  19. Find the co-ordinate of the point on the circle x^2+y^2-12x-4y +30=0, ...

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  20. If the angle of intersection of the circle x^2+y^2+x+y=0 and x^2+y^2+x...

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