Question

Plzz solve this below question fast

Step by step explanation:

Answer 1

Answer:

Step-by-step explanation:

in a triangle abc let AE be ⊥ BC and all sides of the triangle be a.

BD=1/3BC

BC=3BD

BE=CE=BC/2=a/2

AE=a√3/2

ED=a/6

In rt. trianglle ADE

AD²=AE²+ED²

=(a√3/2)²+(a/6)²

=3a²/4+a²/36

=27a²+a²/36

=28a²/36

=7a²/9

AD²=7a²/9

9AD²=7a²

9AD²=7AB²(as AB=a)

Answer 2

Answer:

Step-by-step explanation:

See the attachment:-