In isosceles triangle ABC, AB=AC and BC=300. Let D be a point on AB such that DE is perpendicular to AC. If DE=120, DB=221 and CE=271, find AD.

Question

nikato · Answer

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nikato · Answer

where would u put DE, specificly where would E be?

anonymous · Answer

@nikato  Let D be a point on AB and E a point on AC such that DE is perpendicular to AC

nikato · Answer

ok. thanks. thats much clearer

nikato · Answer

is there any more info?

anonymous · Answer

@nikato That's all that is written here.

nikato · Answer

wait a moment. still working...

anonymous · Answer

@nikato Okay, I will wait for your reply :)

nikato · Answer

ok. is what i got so far..|dw:1390720956701:dw|

nikato · Answer

and u can set up these two equations

221+x=271+y

120^2 +y^2=x^2

but somehow this doesnt really work

nikato · Answer

@agent0smith  can u help with this problem please?

anonymous · Answer

@nikato If it helps, the answer is 169. I'm just looking for how to solve this problem.

mathstudent55 · Answer

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mathstudent55 · Answer

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