Asked by Rick
please simplify
sin (7pi/6 -x) + cos (2pi +x)
sin (7pi/6 -x) + cos (2pi +x)
Answers
Answered by
drwls
Use the formulas for sin (A - B) and cos (A + B)
I can tell you right away that cos (2 pi + x) = cos x
I can tell you right away that cos (2 pi + x) = cos x
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