// Scilab Code Ex4.2:: Page-4.6 (2009)
clc; clear;
ip = 57;    // Polarizing angle, degrees
mu = tand(ip);  // Refractive index of the material from Brewster's law 
printf("\nThe refractive index of the material = %4.2f", mu);

// Result 
// The refractive index of the material = 1.54