Question

In △ABC, BD is an altitude.

What is the length, in units, of BD?
(ill post pic)

Answer 1

The length altitude of a right triangle is the geometric mean of the two parts of the hypotenuse:
DB = sqrt(AD*CD)

Answer 2

What is the exact answer? I know you just gave it to be but i cant see for pellet at 2 in the morning

Answer 3

do the same way i showed u

Answer 4

forget that BS formula he gave u

Answer 5

use the fact that these are similar triangles again

Answer 6

that is where that formula comes from

Answer 7

I will work on that stuff with the working and stuff tomorrow -_-. My mom just wants me to do 2 a day and i screwed up by waiting til the last minute and I need the answers before I go to bed .