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February 1, 2015

February 1, 2015

Posted by **Don** on Sunday, November 6, 2011 at 7:13pm.

19cos(theta-50degrees) as a sum of sine and cosine.

- trig -
**bobpursley**, Sunday, November 6, 2011 at 7:16pmWhat is COS(A-B)? Use your identity formula.

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