This question was asked in Ex 6.5, 2
It can be easily solved .make ∆RMP~∆PMQ
∆PMQ~RMP
  1. =PM/RM=MQ/MP=PQ/RM
  2. CROSS MULTIPLY PM/RM AND MQ/MP
  3. We get PM*PM=QM*MR
  4. So (PM)^2 =QM *MR
pratik Shanbhag's image
pratik Shanbhag
Dec. 13, 2018, 7:19 p.m.

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