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Pair of Tangents from a Point

A tangent is ...

Question

A tangent is drawn to the circle $2 x^{2} + 2 y^{2} - 3 x + 4 y = 0$ at the point ‘A’ and it meets the line x + y = 3 at B(2, 1), then AB =

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Solution

The correct option is B
2

length of the tangent = $\sqrt{s_{1}}$

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