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OpenStudy (anonymous):
give the exact value of cos pi/3
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OpenStudy (anonymous):
Well, we need the "special triangles" for this! Im not sure if you guys have covered them in class but it's basically this. Say you have a scalene triangle with the shortest side being 1, the hypotenuse being 2, and therefore the last side being the square root of 3. Did you guys cover that? |dw:1379638401607:dw|
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