## anonymous one year ago Last question I have before my final: How do I find tan(5pi/6) I would prefer u show the steps.

1. Nnesha

calculator ?? hmm or no ?

2. anonymous

Not that you really need one though.

3. Nnesha

well for final exam you really need one TI-84 calculator :D jk

4. Loser66

$$tan (5\pi/6)=\dfrac{sin(5\pi/6)}{cos(5\pi/6)}$$ And we know that $$sin(5\pi/6) = sin (\pi/6)=1/2$$ $$cos (5\pi/6) = -cos(\pi/6)=-\dfrac{\sqrt3}{2}$$ put them in and find tan (5pi/6)|dw:1433942739529:dw|

5. Nnesha

yep but still you have to memorize unit circle or use 30-60-90 triangle theorem gO_Od luck!