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Question
In the given figure, find TP if AT = 16 cm and AB = 12 cm.
Solution
PT is the tangent and TBA is the secant of the circle.
Therefore, TP2 = TA × TB
TP2 = 16 × (16 − 12) = 16 × 4 = 64 = (8)2
Therefore, TP = 8 cm
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