How to Use
- Choose DEG or RAD for trigonometry.
- Enter expressions using buttons or your keyboard. Use parentheses for order of operations.
- Common functions:
sin(,cos(,tan(,ln(,log(,√,x^y,n!. - Use MC/MR/M+/M−/MS to store and recall numbers.
Worked Examples
- Trig (Degrees):
sin(30)→ 0.5 (ensure DEG is selected). - Logarithms:
log(1000)→ 3,ln(e)→ 1. - Powers:
2 ^ 10→ 1024,10^ 3→ 1000. - Percent:
200 * 15%→ 30. - Factorial:
6!→ 720 (integers ≥ 0 only).
Formulas & Notes
Power uses caret: a ^ b (converted to exponentiation). Trig respects angle mode. Percent turns a trailing % into ÷100. Factorial n! is defined for whole, non-negative n.
Educational use only.
Frequently Asked Questions
How do I switch between degrees and radians?
Click DEG or RAD next to the display. Trig and inverse trig use your selection.
Why does ^ work for powers?
The UI accepts ^ and converts it to exponentiation during evaluation.
What does the percent symbol do?
A trailing % becomes a division by 100 (e.g., 15% → 0.15).
Can I use factorial on decimals?
No—n! requires a non-negative integer.