Trigonometry in stylus

gistfile1.coffee

pi = 3.14159265359

factorial(n)
  if n is 1
    n
  else
    n * factorial(n - 1)

radians(n)
  n * pi / 180

raise(n, x)
  if x is 1
    n
  else
    n * raise(n, x - 1)

taylor(n, x)
 raise(n, x) / factorial(x)

sin(n)
  (n - (((((((taylor(n, 3) + taylor(n, 5)) - taylor(n, 7)) + taylor(n, 9)) - taylor(n, 11)) + taylor(n, 13)) - taylor(n, 15)) + taylor(n, 17)))

cos(n)
  (n - (((((((taylor(n, 2) + taylor(n, 4)) - taylor(n, 6)) + taylor(n, 8)) - taylor(n, 10)) + taylor(n, 12)) - taylor(n, 14)) + taylor(n, 16)))

tan(n)
  sin(n) / cos(n)