Returns a Double specifying the cosine of an angle.
Cos([num]) |
The optional num argument is a Double or any valid numeric expression, specifying the angle in radians. If this argument is omitted, is a non-initialized variable, or Null, the function returns 1.
The Cos function takes an angle in radians and returns the ratio of two sides of a right triangle. The ratio is the length of the side adjacent to the angle divided by the length of the hypotenuse.
The result lies in the range -1 to 1.
To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.
Dim MyAngle, MySecant MyAngle = 1.3 ' Define angle in radians. MySecant = 1 / Cos(MyAngle) ' Calculate secant. |
See Also |
Atn Function, Sin Function, Tan Function |