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**Trigonometric ratios of 30º, 45º and 60º**
Figure	Figure


$\theta\,$	$\sin \theta\,$	$\cos \theta\,$	$\tan \theta\,$	$\cot \theta\,$	$\sec \theta\,$	$\csc \theta\,$
$30^\circ\,$	$\frac{1}{2}\,$	$\frac{\sqrt{3}}{2}\,$	$\frac{1}{\sqrt{3}}\,$	$\sqrt{3}\,$	$\frac{2}{\sqrt{3}}\,$	$2\,$
$45^\circ\,$	$\frac{1}{\sqrt{2}}\,$	$\frac{1}{\sqrt{2}}\,$	$1\,$	$1\,$	$\sqrt{2}\,$	$\sqrt{2}\,$
$60^\circ\,$	$\frac{\sqrt{3}}{2}\,$	$\frac{1}{2}\,$	$\sqrt{3}\,$	$\frac{1}{\sqrt{3}}\,$	$2\,$	$\frac{2}{\sqrt{3}}\,$