Tandy 1000 Basic Reference Manual

Chawter 10 I BASIC Kevwords
ATN
Function
ATN(number)
Returns the arctangent of number.
ATN returns the angle (in radians) whose tangent is number.
Number must be given in radians.
BASIC always returns the result as a single precision number
unless you specified the
/D switch when starting up BASIC.
To convert this value
to degrees, use ATN(number*PI), where PI
equals
3.141593.
Example
PRINT ATN(7)
prints the arctangent of 7 which is 1.428899
X = ATN(Y/3) * 57.29578
computes the arctangent of Y13 in degrees and assigns the value
to x.
99

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200