circle

Question: Tangents drawn from origin to the circle ${{x}^{2}}+{{y}^{2}}-2ax-2by+{{b}^{2}}=0$ are perpendicular to each other, if

1) $a-b=1$

2) $a+b=1$

3) ${{a}^{2}}={{b}^{2}}$

4) ${{a}^{2}}+{{b}^{2}}=1$

Solution:

Explanation: No Explanation

Tangent and normal to a circle

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