Question

in the adjoning figure ,ad is bisector of angle BAC .if ab=6cm,ac=4cm and bd=3cm.find bc​

Answer 1

Answer:

DC=1.472

Step-by-step explanation:

Use pythogorus theorem

Answer 2

Step-by-step explanation:

Here we can see that

∠BAC

is bisected by AD where AD touches BC at D.

BC=BD+DC,

BC=3cm

also given the adjasent sides ,

AB=6cm. and AC = 5cm.

from angle bisector theorem ,

it satisfied that,

AB/BD = AC}{DC} \:

BD

AB

=

DC

AC

\begin{gathered}DC= \frac{AC \times BD}{AB} \\ = \frac{5 \times 3}{6} \\ = 2.5cm \: \end{gathered}

DC=

AB

AC×BD

=

6

5×3

=2.5cm