Tan Function

Returns a Double specifying the tangent of an angle.

Syntax

Tan([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 0.

Remarks

Tan takes an angle in radians and returns the ratio of two sides of a right triangle. The ratio is the length of the side opposite the angle divided by the length of the side adjacent to the angle.

To convert degrees to radians, multiply degrees by pi/180. To convert radians to degrees, multiply radians by 180/pi.

Example

Dim MyAngle, MyCotangent
MyAngle = 1.3   ' Define angle in radians.
MyCotangent = 1 / Tan(MyAngle)   ' Calculate cotangent.

 

See Also

Atn Function, Cos Function, Sin Function