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OpenStudy (anonymous):
sin theta= 3/5 cos beta = 2sqrt6/5 Find cos(theta+beta). Is the answer 8sqrt6-3/25
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OpenStudy (anonymous):
\[\cos \left( \theta+\beta \right)=\cos \theta \cos \beta -\sin \theta \sin \beta \] find \[\cos \theta ~and~ \sin \beta \] then solve
OpenStudy (anonymous):
Yes I need someone to check my answer
OpenStudy (anonymous):
show me I will check
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