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OpenStudy (anonymous):
Simplify cos(theta-u) to a single trig function using the sum or difference of angles identity.
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OpenStudy (anonymous):
is there a picture? or answers?
OpenStudy (anonymous):
no
OpenStudy (anonymous):
thanks
OpenStudy (jdoe0001):
well, the most you can do is expand it using the cosine sum identity then
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OpenStudy (anonymous):
well said @jdoe0001
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