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CBSE Class 10 Answered

similar triangles
Asked by | 14 Dec, 2008, 09:47: PM
answered-by-expert Expert Answer

In triangle PQS, using pythagorus theoram:

PQ2+QS2=PS2    .. (1)

 

In triangle PQR,usin pythagorus theoram,

PR2=PQ2+QR2=PQ2+4 QS2  (Using QR=2 QS)

Using value of QS2 from 1 we have:

PR2==PQ2+4 PS2 - 4PQ2 =4PS2-3PQ2

Answered by | 15 Dec, 2008, 01:41: AM
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