Question

In △ABC, AD¯¯¯¯¯ is the angle bisector of ∠BAC.

What is BD?

Enter your answer, as a decimal, in the box.

Answer 1

Answer:

The angle bisector theorem states that given any triangle ABC with the foot of the angle bisector of angle A at point D (so AD bisects ∠BAC), two specific ratios are the same: AC CD = AB BD Written another way DB  DC AB  AC meaning D splits side BC in the side ratio AB AC.