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Clever coordinate geometry

Geometry Level 2

A line is tangent to the circle $x^2 + y^2 = 4$ and passes through the point $(5, 0)$ . If the line is tangent at $(m, n)$ , find the value of $m$ .

\frac{3}{5}

\frac{6}{5}

\frac{4}{5}

1

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by Andrew Ellinor

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