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Two tangent RQ and RP are …

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Two tangent RQ and RP are drawn from an external point R to the circle with center O. If angle PRQ = 120 , then prove that OR = PR + RQ.
  • 1 answers

Vanshika Mittal 6 years, 9 months ago

Cos 60= PR/OR 1/2 = PR/OR OR= 2PR - - - - - - - - - (1) IN TRIANGLE QRO COS60 = RQ/OR 1/2= RQ/OR 2RQ= OR-----------(2) ADDING BOTH, OR+OR = 2PR + 2RQ OR= PR + RQ HENCE PROVED
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