See :math.cos/1
:math.cos/1
See :math.pi/0
:math.pi/0
See :math.pow/2
:math.pow/2
See :math.sin/1
:math.sin/1
See :math.sqrt/1
:math.sqrt/1
See :math.cos/1.
See :math.pi/0.
See :math.pow/2.
See :math.sin/1.
See :math.sqrt/1.