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OpenStudy (anonymous):
evaluate tan(cos^-1(-15/17)).
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OpenStudy (anonymous):
Are you allowed to use a calculator?
OpenStudy (anonymous):
yes but I cant find it thats why
OpenStudy (anonymous):
-.5333333 I am in degree mode. I don't give answers normally. You know how to do this if you had a calculator right?
OpenStudy (anonymous):
yes I do. Thank you!
OpenStudy (anonymous):
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