Atan2 - Texas Instruments TI-89 Developer's Manual
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372
Appendix A: System Routines — Direct Floating Point Operations
atan2
Declaration:
double atan2 (double y , double x )
Category(ies):
Direct Floating Point Operations
Description:
Computes the inverse tangent of y / x .
Inputs:
y, x — Double floating-point values.
Outputs:
Returns the inverse tangent of y / x in radian measure.
Assumptions:
None
Side Effects:
None
Availability:
All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
None
Differences:
See Also:
acos, asin, atan, cos, sin, tan
Example:
TI-89 / TI-92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
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My screen is dark and nothing appears when I type, I qam trying to figure a solution
To fix a dark screen on a Texas Instruments TI-89 calculator, adjust the display contrast. Press and release the [Diamond] key, then press and release the [−] key. Repeat this process a few times until the screen is visible. If the issue persists, try replacing the AAA batteries with a fresh set from the same package and adjust the contrast again.
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