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OpenStudy (anonymous):
tan(2arctan(-3))
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OpenStudy (anonymous):
3/4
OpenStudy (anonymous):
hi! please explain how you got that
OpenStudy (anonymous):
let x=2arctan(-3) =2(-71.565051) =-143.1301 then tan(x)=3/4
OpenStudy (anonymous):
how do you get that without using a calculator?
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