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OpenStudy (anonymous):
Evaluate cot1, cos(-2.5) and csc0.8. I know how to evaluate something like sin pi/4 because i can easily find it on the unit circle but the others im not sure how to figure out.
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OpenStudy (jdoe0001):
I'd assume you're meant to use the calculator
OpenStudy (anonymous):
no, my teacher told us not to ... can i not figure it out without a calculator ?
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