"A method that is easier to understand and does not make use of the sin function is based on the fact that \n",
"if *X* $\\sim$ *U*(0, 1) and *Y* $\\sim$ *U*(0, 1), then *P*[$X^2$ + $Y^2$ $\\le$1] $=$ $\\pi$/4 (see [\"Monte Carlo method\"on Wikipedia)](https://en.wikipedia.org/wiki/Monte_Carlo_method). The following code uses this approach:"