Let `vec(A)D` be the angle bisector of `angle A" of  " Delta ABC ` such that `vec(A)D
Channel: Doubtnut
Date: 24/05/2020

Let `vec(A)D` be the angle bisector of `angle A" of  " Delta ABC ` such that `vec(A)D=alpha vec(A)B+beta vec(A)C,` then