circle

Question: The equations of the tangents drawn from the origin to the circle ${{x}^{2}}+{{y}^{2}}-2rx-2hy+{{h}^{2}}=0$ are

1) $x=0,y=0$

2) $({{h}^{2}}-{{r}^{2}})x-2rhy=0,x=0$

3) $y=0,x=4$

4) $({{h}^{2}}-{{r}^{2}})x+2rhy=0,x=0$

Solution:

Explanation: No Explanation

Tangent and normal to a circle

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