Returns the angle whose cosine is the specified double.
Parameters
- d
- A double representing a cosine, where -1 <= d <= 1.
Returns
A double containing the value of an angle, theta, measured in radians, for which d is the cosine, such that 0 <= theta <= pi. If d < -1, d > 1, or d = double.NaN, returns double.NaN.
Remarks
Note: Multiply the return value by 180/pi to convert from radians to degrees.
Requirements
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0