Hans Georg Schaathun
September 2016
$$\sin x$$
$$\mathrm{Sin}\; x = \sin x$$
$$\text{for } -\frac\pi2 \le x \le \frac\pi2$$
$$\mathrm{Sin}\; x$$
$$\text{for } -\frac\pi2 \le x \le \frac\pi2$$
$$\mathrm{Sin}^{-1}\; y$$
$$\text{for } -1 \le y \le 1$$
$$\sin x$$
$$\sin^{-1} x$$
$$\sin^2 x = (\sin x)^2$$
$$\sin^{-1} x \neq (\sin x)^{-1}$$
$$(\sin x)^{-1}=\frac1{\sin x}=\csc x$$