if the bisectors of angles B,C in triangle ABC meet opposite sides in E,F then prove that EF makes with - Maths - Solution of Triangles

Question

if the bisectors of angles B,C in triangle ABC meet opposite sides
in E,F then prove that EF makes with BC an angle of tan ^-1
((b-c)sin A/(a+b)cos C +( a+c) cos B)

Mohammed Adil Ibrahim · Answer

will anyone answer this pls it has been 3 days by now

if the bisectors of angles B,C in triangle ABC meet opposite sides in E,F then prove that EF makes with BC an angle of tan ^-1 ((b-c)sin A/(a+b)cos C +( a+c) cos B)