Review the law of sines and the law of cosines, and use them to solve problems with any triangle.
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Tutorial on the law of sines and cosines and on how to decide which formula to use in triangle problems.
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Depending upon the variables given in the question, we can make use of either the sine or the cosine rule to find the remaining variables.
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The Law of Sines, a/sin(A) = b/sin(B) = c/sin(C), The Law of Cosines, c^2 = a^2 + b^2 - 2ab times cos(C), Proofs
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You are watching: Top 4+ When To Use Law Of Sines Vs Law Of Cosines
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