Having issue with tan(7pi/6) converting degrees then to radical
By David Jones •
I'm trying to work out the following problem:
tan 7pi / 6I first converted radians to degrees and got 210
tan(210 degrees) = 0.577350
How do I convert this to a radical? I'm having a hard time doing this.
$\endgroup$ 111 Answer
$\begingroup$$\tan$ is a periodic function with period $\pi$, then $$\tan \left(\frac{7\pi}{6}\right)=\tan \frac{\pi}{6}=\color{blue}{\frac{1}{\sqrt{3}}}$$
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