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In A B C , internal angle bisector of /...

In ` A B C ,` internal angle bisector of `/_A` meets side `B C` in `DdotD E_|_A D` meets `A C` in `Ea n dA B` in `Fdot` Then `A E` is`HdotPdot` of`b` and`c` `A D=(2b c)/(b+c)cosA/2` `E F=(4b c)/(b+c)sinA/2` (d) ` A E Fi si sos c e l e s`

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