Using laws of cosine when only 2 sides are given? - Freemason Hirams Travels Masonic Forums

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02-25-2008, 11:11 PM

Quasar

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Using laws of cosine when only 2 sides are given?

Hi there,
I'm wondering how one would go about solving a problem using the laws of sine when only 2 sides are given with 1 angle, instead of the usual 3 sides. For example, an example problem from my book is A=50 degrees, b=15, c=30. The problems are quite easy with 3 sides, but I'm uncertain about 2 sides and an angle. Any help would be greatly appreciated. Thanks!

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