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OpenStudy (anonymous):
helpp wth law of cosines formula pic in comments
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OpenStudy (anonymous):
OpenStudy (zzr0ck3r):
google the law of cosines
OpenStudy (anonymous):
The answers seem to be written incorrectly. If you were solving for side c you wouldn't use c to solve for c.
OpenStudy (anonymous):
i know its weird
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OpenStudy (anonymous):
B...is right choice..
OpenStudy (anonymous):
Yet, the closest one to being correct is the second one since it uses the cos(C) and has \(a^2+b^2\)
OpenStudy (anonymous):
but Option B will be right if it is...2abcosC....
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