#!usr/bin/python3
import math

def theta(t):
	if 0 < t < (math.pi/2):
		print("theta",t)
		print("sin:",round(math.sin(t),3))
		print("cos:",round(math.cos(t),3))
		print("tan:",round(math.tan(t),3))
	else:
		print("Theta must be between (0,π/2)")

def main():
	t = eval(input('Δώσε γωνία θ: '),{"pi": math.pi, "π": math.pi})
	theta(t)


if __name__=="__main__":
	main()