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OpenStudy (anonymous):
In a triangle, suppose we know that b=3 ft, side c=2 ft, and that angle A=140 degrees. According to the Law of Cosines, length of side a is?
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OpenStudy (campbell_st):
do yo know the formula for the law of cosines...?
OpenStudy (anonymous):
yes i do
OpenStudy (anonymous):
find cosA
OpenStudy (anonymous):
i looked in the answer key and saw that the answer was 22, but i couldnt seem to get it. i know you're supposed to use law of cosines formula to do it and i tried that but it didnt work
OpenStudy (anonymous):
k i'll try nd see
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OpenStudy (anonymous):
thx
OpenStudy (anonymous):
|dw:1376384636904:dw|
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