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OpenStudy (anonymous):
Find sin (45+theta) - cos(45-theta)
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OpenStudy (anonymous):
-(cos(45)-sin(45))(cos(theta)-sin(theta))
OpenStudy (anonymous):
okay sin45cosa + sinacos45 - sin45sina - cos45cosa = 0
OpenStudy (anonymous):
i used sin a+b and cos a+b expansion cos45=sin45
OpenStudy (anonymous):
sina + b = sinacosb + cosasinb cos (a-b) = cosacosb +sinasinb
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