# cf.DimensionCoordinate.sin

`DimensionCoordinate.``sin`(bounds=True, i=False)

  The trigonometric sine of the data array.

  Units are accounted for in the calculation. For example, the the sine of 90 degrees_east is 1.0, as is the sine of 1.57079632 radians. If the units are not equivalent to radians (such as Kelvin) then they are treated as if they were radians.

  The Units are changed to ‘1’ (nondimensionsal).

  See also

  `cos`, `tan`

  Examples 1: |

      >>> g = f.sin()

  Parameters: | bounds: `bool`, optional If False then do not alter the dimension coordinate’s bounds, if it has any. By default any bounds are also altered. i: `bool`, optional If True then update the dimension coordinate in place. By default a new dimension coordinate is created. In either case, a dimension coordinate is returned.
  Returns: | out: `cf.DimensionCoordinate` The dimension coordinate with the sine of data array values.
  Examples 2: |

      >>> f.Units
      <CF Units: degrees_north>
      >>> print f.array
      [[-90 0 90 --]]
      >>> f.sin()
      >>> f.Units
      <CF Units: 1>
      >>> print f.array
      [[-1.0 0.0 1.0 --]]

      >>> f.Units
      <CF Units: m s-1>
      >>> print f.array
      [[1 2 3 --]]
      >>> f.sin()
      >>> f.Units
      <CF Units: 1>
      >>> print f.array
      [[0.841470984808 0.909297426826 0.14112000806 --]]