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OpenStudy (anonymous):
Math Analysis: cos theta*cot(90-theta)=?
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OpenStudy (anonymous):
sin(theta)
OpenStudy (anonymous):
how did you get that answer?
OpenStudy (anonymous):
cot(90-x)=tan(x)=sin(x)/cos(x) =>cos(x)*cot(90-x)=cos(x)*sin(x)/cos(x)=sin(x)
OpenStudy (anonymous):
okay thx xD
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