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Mathematics 17 Online
OpenStudy (theslytherinhelper):

Using double angle formulas to find exact values

OpenStudy (theslytherinhelper):

OpenStudy (theslytherinhelper):

I've solved most of it; I just get stuck at the end where my teacher says to do KCF?

OpenStudy (theslytherinhelper):

This is the last step. |dw:1393126110917:dw|

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