Question

can someone help me with this?

Answer 1

The perpendicular bisector divides the larger triange into two similar smaller triangles. Use this fact to determine the length of side CB. What info do y ou need that you don't already have?

Answer 2

@3mar

Answer 3

"Similar triangles is the clue" as mathmale said.

Answer 4

i still dont get it

Answer 5

Ok
Take that pic please.

Answer 6

?

Answer 7

Sorry for late.

Answer 8

Apply the sides' rule of similar triangles:
\[\frac{ AB }{ CB }=\frac{ DA }{ DC }\]