Categories > circle > Tangent and normal to a circle > The equation of the tangent at the point $\left( \frac{a{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}},\frac{{{a}^{2}}b}{{{a}^{2}}+{{b}^{2}}} \right)$ of the circle ${{x}^{2}}+{{y}^{2}}=\frac{{{a}^{2}}{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}$ is

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Question: The equation of the tangent at the point $\left( \frac{a{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}},\frac{{{a}^{2}}b}{{{a}^{2}}+{{b}^{2}}} \right)$ of the circle ${{x}^{2}}+{{y}^{2}}=\frac{{{a}^{2}}{{b}^{2}}}{{{a}^{2}}+{{b}^{2}}}$ is


1) $\frac{x}{a}+\frac{y}{b}=1$
2) $\frac{x}{a}+\frac{y}{b}+1=0$
3) $\frac{x}{a}-\frac{y}{b}=1$
4) $\frac{x}{a}-\frac{y}{b}+1=0$
Solution: Explanation: No Explanation
Tangent and normal to a circle

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