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CBSE Class 10 Answered

in triangle pqr pr square-pq square =qr square and m is a point on side pr such that qm is perpendicular pr prove that qm square =pm *mr
Asked by mkvinvestments6 | 16 Sep, 2015, 06:07: PM
answered-by-expert Expert Answer

C o n s i d e r space space t h e space f o l l o w i n g space f i g u r e.

Q R squared equals Q M squared plus M R squared A n d P Q squared equals P M squared plus Q M squared P R squared equals P M squared plus 2 Q M squared plus M R squared open parentheses P M plus M R close parentheses squared minus P M squared minus M R squared equals 2 Q M squared rightwards double arrow 2 P M cross times M R equals 2 Q M squared rightwards double arrow Q M squared equals P M cross times M R

 

 

Answered by | 16 Sep, 2015, 06:55: PM

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