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OpenStudy (anonymous):
find in exact ofrm the value of: cos 315
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OpenStudy (goformit100):
ofrm means ?
OpenStudy (anonymous):
form
OpenStudy (anonymous):
\[\frac{ \sqrt{2} }{ 2 }=\cos(315^{o})\]
OpenStudy (anonymous):
how do you remember/calculate that?
OpenStudy (anonymous):
Unit circle
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OpenStudy (anonymous):
Learn it...Love it!
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