288.Find the length of a tangent to a circle with radius 8 cm from a point 17 cm from the centre of the circle.
Solution not provided.
Ans. 15 cm.
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289.If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 60°, then what is the value of ∠POA?
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290.In the figure given below, PQ and PR are tangents to the circle drawn from an external point P, LM is a third tangent touching the circle at K, If PQ = 15 cm, KM = 4 cm, find the length PL.