EMMA 02

BASIC

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ATN

Format: var = ATN (expr)

Supported by: COMX BASIC V1.00, Floating Point BASIC 2.2, Pecom 32 BASIC, Pecom 64 BASIC 1.0 and 4.0, Quest Super BASIC 3.0, 5.0 and 6.0, RCA BASIC3 V1.1, Telmac SBASIC v 24.3

Similar commands: Quest Super BASIC 1.4: ATN

This function which has the same meaning as ARCTAN (expression) returns the angle (normally expressed in radians) whose tangent is equal to the value of the expression. This function is a floating-point function.

For example

PR ATN (1)

will print

.785399

since TAN (0.785399) = TAN PI/4 = TAN 45°