📌 Scientific Calculator
Scientific Calculator – Trig, Log & More
🧮 Calculator
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📌 Scientific Calculator Functions
This free online scientific calculator supports trigonometric (sin, cos, tan), logarithmic (log, ln), exponential (^), square root, and pi constant for advanced math calculations directly in your browser.
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📌 Complete Function Reference Guide
| Function | Symbol | Example Input | Description |
|---|---|---|---|
| Sine | sin( | sin(1.57) | Trigonometric sine (radians) |
| Cosine | cos( | cos(0) | Trigonometric cosine (radians) |
| Tangent | tan( | tan(0.785) | Trigonometric tangent (radians) |
| Square Root | √ | sqrt(16) | Returns 4 |
| Common Log | log( | log(100) | Base-10 logarithm, returns 2 |
| Natural Log | ln( | ln(2.718) | Base-e logarithm, returns ~1 |
| Exponent | ^ | 2^8 | Power function, returns 256 |
| Pi Constant | π | pi*2 | Uses 3.14159… |
📌 Radians vs Degrees — Important Note
This calculator’s trigonometric functions use radians, not degrees, following standard mathematical convention (same as most programming languages and scientific calculators).
| Degrees | Radians | sin() Result |
|---|---|---|
| 0° | 0 | 0 |
| 30° | 0.524 | 0.5 |
| 90° | 1.571 (π/2) | 1 |
| 180° | 3.14159 (π) | 0 |
💡 Conversion Formula: Radians = Degrees × (π/180). To find sin(90°), calculate sin(1.5708) since 90 × π/180 = 1.5708.
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📌 Order of Operations (PEMDAS)
This calculator follows standard mathematical order of operations, important for getting correct results with complex expressions:
| Order | Operation | Symbol |
|---|---|---|
| 1 | Parentheses | ( ) |
| 2 | Exponents | ^ |
| 3 | Multiplication/Division | × / |
| 4 | Addition/Subtraction | + − |
💡 Example: 2 + 3 × 4 = 14 (not 20), because multiplication happens before addition. Use parentheses to control order explicitly: (2+3) × 4 = 20.
📊 Common Trigonometric Values Reference
| Angle (Degrees) | Radians | sin | cos | tan |
|---|---|---|---|---|
| 0° | 0 | 0 | 1 | 0 |
| 30° | π/6 | 0.5 | 0.866 | 0.577 |
| 45° | π/4 | 0.707 | 0.707 | 1 |
| 60° | π/3 | 0.866 | 0.5 | 1.732 |
| 90° | π/2 | 1 | 0 | undefined |
💡 Common Use Cases for Scientific Calculators
- Physics problems: Trigonometry for vectors, forces, and wave calculations
- Engineering: Log/ln for exponential decay, growth models, signal processing
- Statistics coursework: Square roots for standard deviation calculations
- Finance: Exponents for compound interest and present value calculations
- Architecture/Construction: Trigonometry for roof pitch, angle calculations
❓ Frequently Asked Questions
What functions does this scientific calculator support? +
Supports basic arithmetic (+,-,*,/), exponents (^), square root, sin, cos, tan trigonometric functions, log (base 10), ln (natural log), and pi constant.
How do I calculate trigonometric functions? +
Type sin(, cos(, or tan( followed by the angle in radians and closing parenthesis, e.g., sin(1.57) for sine of approximately 90 degrees.
Can I use this for complex math homework? +
Yes, this calculator handles most standard scientific calculations including trigonometry, logarithms, and exponents suitable for high school and college level math.