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Is line AB tangent to the circle?

Is line AB tangent to the circle?-example-1

1 Answer

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No. If AB is a tangent, it must be perpendicular to a radius of the circle. Stick the numbers into the Pythagorean Theorem to see if the angle of the intersection is a right angle.

a² + b² = c²

6.6² + 11² doesn't quite equal to 13²
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