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प्रश्न
In Δ ABC , DE is parallel to BC and `"AD"/"DB" = 2/7` IF AC = 5 .6 , find AE.
उत्तर
Given :- `"AD"/"DB" = 2/7` , AC = 5.6
To find : AE = x
In Δ ABC , DE || BC ,
∴ By BPT `"AD"/"DB" = "AE"/"EC"`
`2/7 = "x"/(5.6 - "x")`
⇒ 11..2 - 2x = 7x
⇒ 11.2 = 9x
⇒ x = 1.24
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