QBasic 1.1: ATN Function

Explanation

ATN, COS, SIN, TAN Functions

ATN returns the absolute value of a number. COS, SIN, and TAN return the cosine, sine, and tangent of a specified angle.

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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