SOLUTION: Find the exact value of cos75

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Question 1144924: Find the exact value of cos75
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
cos%2875%29
cos%2845%2B30%29
cos%2845%29cos%2830%29-sin%2845%29sin%2830%29
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%28sqrt%286%29-sqrt%282%29%29%2F4





(Know the sines and cosines of some common reference angle measures.)