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December 18, 2014

December 18, 2014

Posted by **Lauren** on Friday, November 2, 2012 at 1:11am.

I got 1/3COS(1/2x-3pi), but I really do not think that is correct D: any tips or advice?

- Trigonometry -
**Steve**, Friday, November 2, 2012 at 1:22amwhy the half? cosx already has a period of 2pi.

1/3 cos(x-3pi/2)

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