common function diagram

	0	$\frac{π}{6}$	$\frac{π}{4}$	$\frac{π}{3}$	$\frac{π}{2}$
$sin α$	0	$\frac{1}{2}$	$\frac{2}{2}$	$\frac{3}{2}$	1
$cos α$	1	$\frac{3}{2}$	$\frac{2}{2}$	$\frac{1}{2}$	0
$tan α$	0	$\frac{3}{3}$	1	$3$	undefined

$f (x) = arctan x$
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x \to + \infty, arctan x \to \frac{π}{2} x \to - \infty, arctan x \to - \frac{π}{2}

$f (x) = e^{x}$
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x \to + \infty, e^{x} \to + \infty, e^{+ \infty} \to + \infty x \to - \infty, e^{x} \to 0, e^{- \infty} \to 0

Quartz 4