## Math ##

from math import *

def sind(x):
	return sin(radians(x))

def cosd(x):
	return cos(radians(x))

def tand(x):
	return tan(radians(x))

def asind(x):
	return degrees(asin(x))

def acosd(x):
	return degrees(acos(x))

def atand(x):
	return degrees(atan(x))

def atan2d(a, b):
	return degrees(atan2(a, b))

def norm(*args):
	return sqrt(sum([float(a)**2 for a in args]))