$$\begin{array}{l}u＝罪\theta \mathrm{因为}\varphi \\ v＝罪\theta 罪\varphi \end{array}$$

$$\begin{array}{l}u＝\mathrm{因为}el罪\mathrm{一个}z\\ v＝罪el\end{array}$$

$$\begin{array}{l}-1\le u\le 1\\ -1\le v\le 1\\ u^2+v^2\le 1\end{array}$$

$$\begin{array}{l}\mathrm{棕褐色}\varphi ＝u/v\\ 罪\theta ＝\sqrt{u^2+v^2}\end{array}$$

$$\begin{array}{l}罪el＝v\\ \mathrm{棕褐色}\mathrm{一个}z＝\frac{u}{\sqrt{1-u^2-v^2}}\end{array}$$

$$\begin{array}{l}罪（\text{埃尔}）＝罪\varphi 罪\theta \hfill \\ \mathrm{棕褐色}（\text{阿兹}）＝\mathrm{因为}\varphi \mathrm{棕褐色}\theta \hfill \\ \hfill \\ \mathrm{因为}\theta ＝\mathrm{因为}（\text{埃尔}）\mathrm{因为}（\text{阿兹}）\hfill \\ \mathrm{棕褐色}\varphi ＝\mathrm{棕褐色}（\text{埃尔}）/罪（\text{阿兹}）\hfill \end{array}$$