The equations of the tangents drawn from the origin to the circle ${x^2} + {y^2} - 2rx - 2hy + {h^2} = 0$ are
The equations of the tangents drawn from the origin to the circle ${x^2} + {y^2} - 2rx - 2hy + {h^2} = 0$ are
- [IIT 1988]
- A
$x = 0,y = 0$
- B
$({h^2} - {r^2})x - 2rhy = 0,x = 0$
- C
$y = 0,x = 4$
- D
$({h^2} - {r^2})x + 2rhy = 0,x = 0$
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