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OpenStudy (anonymous):
Solve 10cosx + 5 = 15
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OpenStudy (anonymous):
get the similar items together
OpenStudy (anonymous):
10cosx = 15-5
OpenStudy (anonymous):
and then it is simple from here
OpenStudy (anonymous):
10cosx+5=15 10cosx=15-5 10cosx=10 divide both sides by 10 cosx=1 x=arc cos 1 x=0
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