QBasic 1.1 Commands List: ATN Function

Syntax
ATN(numeric-expression)
COS(angle)
SIN(angle)
TAN(angle)
Description / Parameter(s)
numeric-expression The ratio between the sides of a right triangle
angle An angle expressed in radians
The ATN function returns an angle in radians
To convert from degrees to radians, multiply degrees by (PI / 180)

Example

CONST PI=3.141592654 PRINT ATN(TAN(PI/4.0)), PI/4.0 'Output is: .7853981635 .7853981635 PRINT (COS(180 * (PI / 180))) 'Output is: -1 PRINT (SIN(90 * (PI / 180))) 'Output is: 1 PRINT (TAN(45 * (PI / 180))) 'Output is: 1.000000000205103