Std 10th ;
Given: D and E are the points on sides RS and RT respectively of ∆RST such that DE||ST, EM(perpendicular)RS and DN(perpendicular)RT. DT and ES are joined. prove that RD/DS=RE/ET
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I am in 7 std so I can't help you ( ≧Д≦)
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Have a nice day (✯ᴗ✯)
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