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OpenStudy (anonymous):
y=3+7 cos 5 ( thetha-28 degrees) a) find y when thetha= 321 degrees b) what is the maximum value y reaches? c) for what value of thetha does y reach this maximum value?
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OpenStudy (anonymous):
a) 3+ 7cos(5*(293)) b) 10 (max value of cosine is 1) c) 1=cos(5(theta -28)) arccos(1) = 5(theta -28) 28 + ( arccos(1))/5 = theta
OpenStudy (anonymous):
how do you know the max value of cosine?
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