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OpenStudy (anonymous):
how do i solve 1-cos(theta)=1/2?
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OpenStudy (anonymous):
is 1-cos = 1*(-cos)?
OpenStudy (anonymous):
1-cos(theta)=1/2 -cos(theta)=1/2+1 cos(theta)=-(1/2+1) theta=arccos(-(1/2+1))
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