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Exact values of trigonometric functions


$$\begin{array}{|c|c|c|c|c|c|}
\hline
  {\text{Degrees}} & 0 & 30^{\circ} & 45^{\circ} & 60^{\circ} & 90^{\circ} & 180^{\circ} & 270^{\circ} & 360^{\circ} \\\hline
  {\text{Radians}} & 0 & {\frac{\pi}{6}} & {\frac{\pi}{4}} & {\frac{\pi}{3}} & {\frac{\pi}{2}} & {\pi} & {\frac{3\pi}{2}} & {2\pi} \\\hline
  {\sin\alpha} & 0 & {\frac{1}{2}} & {\frac{\sqrt{2}}{2}} & {\frac{\sqrt{3}}{2}} & 1 & 0 & -1 & 0 \\\hline
  {\cos\alpha} & 1 & {\frac{\sqrt{3}}{2}} & {\frac{\sqrt{2}}{2}} & {\frac{1}{2}} & 0 & -1 & 0 & 1\\\hline
  {\tan\alpha} & 0 & {\frac{\sqrt{3}}{3}} & 1 & {\sqrt{3}} & - & 0 & - & 0\\\hline
  {\cot\alpha} & - & {\sqrt{3}} & 1 & {\frac{\sqrt{3}}{3}} & 0 & - & 0 & -\\\hline
\end{array}$$

Last time edited 2019-01-21

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