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The length of tangent drawn from a point 8 cm away from the centre of circle of radius 6 cm. (Answer 2√7) tell me the process. |
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Answer» Answer: ANSWER Let O be the centre of the circle. OA is the radius of the circle and OP is 8 CM According to QUESTION, we have ∠OAP=90 0
So,cby Pythagoras theorem,cwe get OP 2 =OA 2 +AP 2
⇒AP 2 =OP 2 −OA 2
⇒AP 2 =8 2 −6 2
⇒AP 2 =64−36 ⇒AP 2 =28 ⇒AP=2 7
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