from math import cos, pi, radians, sin, tan
# Angles are in radians
sin90 = sin(pi/2)
# sin90 is 1.0
cos180 = cos(pi)
# cos180 is -1.0
# Float result is not exact
tan45 = tan(pi/4)
# tan45 is 0.9999999999999999
# Degrees to radians
sin30 = sin(radians(30))
# sin30 is 0.49999999999999994
print(f"{sin90 = }")
print(f"{cos180 = }")
print(f"{tan45 = }")
print(f"{sin30 = }")