Tangent to a circle, number of tangents from an external point, properties of tangents.
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Q1 · Circles (Class 10) · EASY
A chord of length 16 cm is at a distance of 6 cm from the centre of a circle. What is the radius of the circle?
Q2 · Circles (Class 10) · HARD
Two tangents PA and PB are drawn to a circle with center O from an external point P. If ∠APB = 60°, then ∠AOB is: