Cosine Rule
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- Where the uppercase letters correspond to the angle, and the lower case letter is the side opposite it.
- The different formulas are provided for use depending on what sides/angles you are given. I recommend choosing just one, learning that and changing the sides/angles accordingly.
- The Cosine Rule is used when you have either two sides and an angle or three sides.
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- GCSE Mathematics Slide Set on Cosine Rule, created by Rick Wear on 12/04/2017.
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- Rick Wear
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