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Mathematics 14 Online
OpenStudy (anonymous):

verify that the equation is an identity ....

OpenStudy (aakashsudhakar):

An equation would help?

OpenStudy (fibonaccichick666):

I'm willing to bet it's the same as this one http://openstudy.com/updates/547189f9e4b0db93229bfa24

OpenStudy (anonymous):

\[\sin 4\theta=4\cos2\theta \cos \theta \]

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