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

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

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

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

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

$$\begin{array}{l}罪el=罪\varphi 罪\theta \\ \mathrm{棕褐色}\mathrm{一个}z=\mathrm{因为}\varphi \mathrm{棕褐色}\theta \\ \mathrm{因为}\theta =\mathrm{因为}el\mathrm{因为}\mathrm{一个}z\\ \mathrm{棕褐色}\varphi =\mathrm{棕褐色}el/罪\mathrm{一个}z\end{array}$$