SOLUTION: I'm lost In a right triangle ABC, angle B=90, AB=5, and AC=12. Find BC. Round to the nearest tenth if necessary. Must show work. Please Help Thanks

Algebra ->  Triangles -> SOLUTION: I'm lost In a right triangle ABC, angle B=90, AB=5, and AC=12. Find BC. Round to the nearest tenth if necessary. Must show work. Please Help Thanks      Log On


   

Question 162498: I'm lost
In a right triangle ABC, angle B=90, AB=5, and AC=12. Find BC. Round to the nearest tenth if necessary. Must show work.
Please Help
Thanks
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
You use the Pythagorean theorem to solve.
a%5E2+%2Bb%5E2=+c%5E2
a=5
c= 12
5%5E2+%2B+bc%5E2+=+12%5E2
25+%2B+bc%5E2+=+144
b%5E2+=+119
take the square root of both sides;
bc = 10.91
:)