Functions available
| Key | What it does | Example |
|---|---|---|
| sin, cos, tan | Trigonometric functions | sin(30) = 0.5 in Deg mode |
| 2nd → sin⁻¹, cos⁻¹, tan⁻¹ | Inverse trigonometric functions | sin⁻¹(0.5) = 30° |
| log | Common logarithm (base 10) | log(1000) = 3 |
| ln | Natural logarithm (base e) | ln(e) = 1 |
| 2nd → 10ˣ, eˣ | Inverse of log and ln | 10^3 = 1000 |
| x², x³, xʸ | Square, cube and any power | 2^10 = 1024 |
| √, ∛ | Square and cube root | √(144) = 12 |
| n! | Factorial | 5! = 120 |
| π, e | Constants: 3.14159…, 2.71828… | 2π = 6.28318… |
| % | Percent (divides by 100) | 50% = 0.5 |
| Ans | The previous answer | Ans × 2 |
| MC, MR, M+, M− | Memory clear, recall, add, subtract |
Order of operations
The calculator follows the standard mathematical order (BODMAS / PEMDAS): brackets first, then powers and roots, then multiplication and division, then addition and subtraction — left to right. Powers are evaluated right to left, so 2^3^2 = 2^9 = 512, and −2² = −4.
You can skip the × sign before brackets, constants and functions: 2π, 3(4+1) and 2sin(30) all work.
Degrees or radians?
Use Deg for school trigonometry and angles measured in degrees (a full circle is 360°). Use Rad for calculus and physics, where a full circle is 2π radians. The current mode is shown at the top-left of the display. 180° = π radians.
Keyboard shortcuts
- 0–9 and . to type numbers
- **+ − * / for the basic operations, ^** for powers
- ( ) for brackets, ! for factorial, % for percent, p for π
- Enter or = to calculate, Backspace to delete, Esc to clear
Good to know
- The result previews as you type, so you can spot mistakes before pressing =.
- tan(90°) and division by zero are undefined, and the calculator says so instead of showing a wrong number.
- Results are shown to 12 significant digits; very large or small numbers switch to scientific notation (for example 1.2e+20).
- Your last 20 calculations stay in the history panel while the page is open — tap one to reuse it.
Worked examples
| Type this | Result | Why |
|---|---|---|
| sin(45)^2+cos(45)^2 | 1 | sin²θ + cos²θ = 1 for any angle |
| tan(60) | 1.73205080757 | tan 60° = √3 |
| sin⁻¹(1) | 90 | the angle whose sine is 1, in degrees |
| log(2) | 0.301029995664 | common logarithm |
| ln(10) | 2.30258509299 | natural logarithm |
| 5!/(2!×3!) | 10 | ways to choose 2 out of 5 (⁵C₂) |
| 2^10 | 1024 | powers of two |
| √(2) | 1.41421356237 | square root |
Frequently asked questions
How do I calculate sin, cos or tan in degrees?
Make sure the display shows DEG (tap Deg/Rad to switch), then press sin, enter the angle and close the bracket: sin(30) = 0.5.
How do I find the inverse of sin?
Press 2nd, then sin⁻¹, and enter the value: sin⁻¹(0.5) = 30 in degree mode.
What is the difference between log and ln?
log is the logarithm to base 10 (log 100 = 2); ln is the natural logarithm to base e ≈ 2.71828 (ln e = 1).
Can I use my keyboard?
Yes. Click the display, then type numbers and operators; press Enter for the answer, Backspace to delete and Esc to clear.
Why does −2^2 give −4?
Powers come before the minus sign in the order of operations, so −2² means −(2²) = −4. Type (−2)^2 to get 4.
How do I calculate combinations like ⁵C₂?
Use factorials: n! ÷ (r! × (n − r)!). Type 5!/(2!×3!) to get 10.