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OpenStudy (anonymous):
can someone please explain? give an example of a real number θ for which cosθ is negative and sinθ is positive
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OpenStudy (anonymous):
anything between 90 and 180 would work I think
OpenStudy (anonymous):
thanks :) can you explain why?
OpenStudy (anonymous):
Just drawing some graphs to help explain
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
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