BEGIN {

	pi = 3.1415927

	printf "cos(%f) = %f\n", pi/4, cos(pi/4)

	printf "sin(%f) = %f\n", pi/4, sin(pi/4)

	e = exp(1)

	printf "e = %f\n", e

	printf "log(e) = %f\n", log(e)

	printf "sqrt(pi ^ 2) = %f\n", sqrt(pi ^ 2)

	printf "atan2(1, 1) = %f\n", atan2(1, 1)

}