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OpenStudy (anonymous):

When do you use Law of Cosine or Law of Sine?

OpenStudy (owlfred):

Hey, you might want to ask this in the mathematics group! http://openstudy.com/groups/mathematics

OpenStudy (anonymous):

Law of cosines is generally used for problems when you have 3 sides and 1 angle. Law of sines is when you have 2 sides and 2 angles. There are some neat formulas for both of these "laws". You can read more on it here: http://www.mathwarehouse.com/trigonometry/law-of-sines-and-cosines.php

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