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English 14 Online
OpenStudy (anonymous):

find the exact value of cos 15 degrees

whitemonsterbunny17 (whitemonsterbunny17):

You miiiiiight want to post this in the Mathematics section. (: You'll get quicker help with this question there. :p

OpenStudy (arabpride):

Yes please ask and post questions under the correct forum *^.^* ~ You get help and your post isn't considered spam ~ Just for future reference ~ Thank You ~

OpenStudy (kc_kennylau):

\[\cos(45^\circ-30^\circ)\]

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