angles.js

jQuery.extend( KhanUtil, {
	commonAngles: [
		{deg: 30, rad: "\\frac{\\pi}{6}"},
        {deg: 45, rad: "\\frac{\\pi}{4}"},
        {deg: 60, rad: "\\frac{\\pi}{3}"},
        {deg: 90, rad: "\\frac{\\pi}{2}"},
        {deg: 120, rad: "\\frac{2\\pi}{3}"},
        {deg: 135, rad: "\\frac{3\\pi}{4}"},
        {deg: 150, rad: "\\frac{5\\pi}{6}"},
        {deg: 180, rad: "\\pi"},
        {deg: 210, rad: "\\frac{7\\pi}{6}"},
        {deg: 225, rad: "\\frac{5\\pi}{4}"},
        {deg: 240, rad: "\\frac{4\\pi}{3}"},
        {deg: 270, rad: "\\frac{3\\pi}{2}"},
        {deg: 300, rad: "\\frac{5\\pi}{3}"},
        {deg: 315, rad: "\\frac{7\\pi}{4}"},
        {deg: 330, rad: "\\frac{11\\pi}{6}"},
        {deg: 360, rad: "2\\pi"}
	],

    // Convert a degree value to a radian value
	toRadians: function( degrees ) {
		return degrees * Math.PI / 180;
	}
});