3e (OR)AB+CD-AD+BCAP B – InterviewSolution

1.

3e (OR)AB+CD-AD+BCAP B

Answer»

Step-by-step explanation:to prove:

AB+CD=AD+BC

Proof :

AP=AS

PB=BQ

CQ=CR

RD=DS (the length of tangent drawn from an external point to a circle are equal)

AP+PB+RD+CR=AS+BQ+DS+CQ

=>AB+CD=AD+BC

Hence proved

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