CASTI-89 TITANIUM · CALC89
angle(
Returns the argument of a complex number, the angle of its point in the complex plane.
Syntax
angle(expr)
- Group
- Number functions
- Arguments
- Takes one complex number or expression.
- Availability
- Included
- Menu path
- MATH ▸ Number ▸ CMPLX ▸ angle(
Example
| Input | Result |
|---|---|
| angle(1+ⅈ) | π/4 |
Typing angle(1+ⅈ) on the home screen and pressing ENTER returns π/4.
Keystrokes on the TI-89 Titanium
2NDMATH1▶4
The same key sequence inserts angle( in Calc89, and the AI tutor shows it step by step on the on-screen keypad.
Related commands
- ans(Recalls a previous answer from the home screen history: ans(1) is the last answer, ans(2) the one before.
- ceiling(Returns the smallest integer that is greater than or equal to a value.
- conj(Returns the complex conjugate of a number, with the sign of the imaginary part changed.
- entry(Recalls a previous entry from the home screen history so it can be evaluated again.
- floor(Returns the largest integer that is less than or equal to a value.
- fPart(Returns the fractional part of a number, the part after the decimal point.
- gcd(Returns the greatest common divisor of two integers.
- imag(Returns the imaginary part of a complex number.