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Sagot :
Unit circle! XD
Pi/6 is in the 30 degree family. What I do is multiply it by 180/pi to get it into degrees. Once you do this, the answer is -390
Pi/6 is in the 30 degree family. What I do is multiply it by 180/pi to get it into degrees. Once you do this, the answer is -390
[tex]tan\left(-\frac{13\pi}{6}\right)=-tan\left(2\frac{1}{6}\pi\right)=-tan\left(2\pi+\frac{1}{6}\piright)=-tan\frac{1}{6}\pi=-\frac{\sqrt3}{3}[/tex]
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