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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 = 1

B

y = 0

C

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

D

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

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The correct Answer is:
A, C
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