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At a given point on a circle, how many tangents can be drawn?
ANone
BExactly one
CExactly two
DInfinitely many
Answer & Solution
Correct answer: B. Exactly one
At a point on the circle, the tangent is perpendicular to the radius through that point. Since only one line can be drawn perpendicular to a given radius at that point, there is exactly one tangent.
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