Sets or returns the rotation angle of a three-dimensional chart in degrees.
In Excel 2007 or 2010, this corresponds to the X rotation. Rotation values outside the range [0, 360] will be interpreted modulo 360. For example, setting
RotationAngle to 400 is equivalent to setting it to 40.
The default rotation angle is 20, except for Pie charts, which use a default of 0.