can you help me :)
this is the problem

Question

can you help me :) 
this is the problem

anonymous · Answer

|dw:1370021021557:dw|smaller side of angle bisected

anonymous · Answer

this is the question : what is the value of X ????? :)

anonymous · Answer

help please

anonymous · Answer

BD=16 ???

anonymous · Answer

x=20??

jhannybean · Answer

You know a full triangle is = 180 degrees. if BD is an angle bisector, it cuts the triangle's measurement in half.what is 180/2?

jhannybean · Answer

so we have the angle measurement of BDC = 90 degrees, now we can aply the pythagorean theorem on special RIGHT triangles.

anonymous · Answer

i know i'm try but i cant find the answer :((

jhannybean · Answer

c=12*

anonymous · Answer

YOU CANT ASSUME IT FORMS A PERPENDICULAR ANGLE

anonymous · Answer

its an angle bisector not a perpendicular bisector
and if it were a perpendicular bisector, it would require the 2 sides to be the same

jhannybean · Answer

OK ok. fine. redrawing.

anonymous · Answer

after giving it some though, i believe you need to use the law of cosines to solve

anonymous · Answer

you know angle ABD and angle DBC are equal to each other

anonymous · Answer

BD IS 17.32 NOT 16

anonymous · Answer

is that given?

anonymous · Answer

NO,  is according to my results of the pythagorean  theorem

jhannybean · Answer

|dw:1370023304475:dw| Ok i guess we have to use pythagorean identity twice. use it on the first triange to find y, then use y and 12 to figure out x.

anonymous · Answer

.....

anonymous · Answer

please draw it to scale

anonymous · Answer

|dw:1370023470738:dw|

anonymous · Answer

ok amigo ya hice todo eso ..... i did all that and doen not gime me good results... :P

anonymous · Answer

thats cause its wrong....

you cannot apply the pythagorean theorem... then angles are not 90 degrees

jhannybean · Answer

Then how do you do this >:(

anonymous · Answer

ok , sorry ..

anonymous · Answer

is the proportion given?

anonymous · Answer

no ...

jhannybean · Answer

think you need atleast one angle... so you can use the angle bisector :\

anonymous · Answer

no... angle bisector is a concept....
a line that divides the angle into 2 seperate angles....

anonymous · Answer

if the angle is x

then the 2 angles from the angle bisector would be x/2 ........

anonymous · Answer

no idea

i never bother to actually do the problem

trying it now

anonymous · Answer

thanks for your help guys, but i give up :(

anonymous · Answer

ahy lora you are so burra

jhannybean · Answer

|dw:1370024362758:dw|