कटी IR 1 9.9x191 D1ज्ञात कीजिए ।एक व – InterviewSolution

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1.	कटी IR 1 9.9x191 D1ज्ञात कीजिए ।एक वृत्त के परिगत एकचतुर्भुज 28009 खींचा गयाहै सिद्ध कीजिए किAB +CD=AD+ BCi
Answer» AP=AS ---1(Tangents drawn from an PB=BQ ---2 external point to a circle CR=CQ ---3 are equal)DR=DS ---4 By adding equation 1,2,3 and 4AP+PB+CR+DR=AS+BQ+CQ+DS (AP+PB)+(CR+DR)=(AS+DS)+(BQ+CQ) AB+CD=AD+BC

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