Purpose
Returns the tangent of a number. You can call this function from the MapBasic window in MapInfo Pro.
Syntax
Tan( num_expr ) num_expr is a numeric expression representing an angle in radians.
Return Value
Float
Description
The Tan() function returns the tangent of the numeric num_expr value, which represents an angle in radians.
To convert a degree value to radians, multiply that value by DEG_2_RAD (0.01745329252). To convert a radian value into degrees, multiply that value by RAD_2_DEG (57.29577951). (Note that your program will need to Include "MAPBASIC.DEF" in order to reference DEG_2_RAD or RAD_2_DEG).
Example
Include "mapbasic.def"
Dim x, y As Float
x = 45 * DEG_2_RAD
y = Tan(x) y will now be equal to 1, because the tangent of 45 degrees is 1.
See Also:
Acos() function, Asin() function, Atn() function, Cos() function, Sin() function