Question

question no17 plzzz...

Answer 1

In triangle ABC ,

given DE||AC

so by basic proportionate theorem,

BE/EC=BD/DA. -(1)

In triangle ABE,

given DE||AE

so by basic proportionate theorem,

BF/FE=BD/DA. -(2)

By 1 and 2 ,

BF/FE=BE/EC

EC/BE=FE/BF

H.P

Answer 2

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