Question

GEOMETRY HELP PLEASE

Answer 1

@annas

Answer 2

well im gonna tank a wild guess ad say that since AD is near the same length as AB
Ab would be 28.6 but i didnt do any math and that could be totally wrong so id wait for a second opinion from some one else.

Answer 3

take****

Answer 4

there is formula for finding the length of a scalene triangle i.e.
c^2 = a^2 + b^2 - 2*a*b*cos(90)
I dont think this formula will work here

Answer 5

just popping back i dont remember the formals for most things but i had to wonder if i was right? @annas

Answer 6

thats what I am thinking, well just a moment lemme get it checked

Answer 7

AB / BC = BD / CD
AB = (BD/CD) * BC
AB = (12.2/7.7)*2.2 = 3.48 ugh..

Answer 8

Dude Idk. Like this problems picture throws me off, it looks isosceles, but.

Answer 9

Would BC = the angle BAC?

Answer 10

This problem is missing something. I can draw an infinite number of triangles with what is given. Is for example Is AC the bisector of DAB? if this known, then it would be solvable

Answer 11

I would let others respond and solve it if they can. @experimentX , @satellite73 @ganeshie8

Answer 12

okie sir :)

Answer 13

assuming what prof said ... the answer is
http://www.wolframalpha.com/input/?i=N%5B4.5*16.7%2F7.7%2C+2%5D
use cosine law ... it is quadratic in AC. assume that there exists only one solution for AC. then eliminate the cosine of angle ... you will get
AB = BC*AD/CD

Answer 14

assuming what prof said ... the answer is
http://www.wolframalpha.com/input/?i=N%5B4.5*16.7%2F7.7%2C+2%5D
here is rough sketch of proof.
use cosine law ... it is quadratic in AC. assume that there exists only one solution for AC. for that determinant has to be zero. then eliminate the cosine of angle ... you will get
AB = BC*AD/CD