A scientific calculator extends basic arithmetic with mathematical functions used in science, engineering and advanced mathematics. This calculator supports addition, subtraction, multiplication, division, powers, square roots, percentages, parentheses, trigonometric functions (sin, cos, tan) and logarithms (log base 10 and natural log).

1. Click number buttons to enter values.
2. Click an operator (+, −, ×, ÷) to set the operation.
3. For functions like sin, cos, log: click the function button, then enter the value and close the parenthesis.
4. Press = to calculate.
5. Press C to clear all, CE to clear the last entry.

Trigonometric functions use radians. To convert degrees to radians: radians = degrees × π / 180

sin(π/6) = sin(0.5236) = 0.5
log(1000) = 3
2^10 = 1024
√144 = 12

Trigonometric functions (sin, cos, tan) take values in radians. For degree inputs, convert first: 90° = π/2 ≈ 1.5708. log() is base 10; ln() is the natural logarithm (base e ≈ 2.71828).

• Entering angles in degrees when the calculator expects radians.
• Forgetting to close parentheses after function calls.
• Using % as modulo — here % divides by 100.

Does this use degrees or radians?

Radians. To convert degrees to radians, multiply by π/180. For example, sin(30°) = sin(30 × π/180) = sin(0.5236) ≈ 0.5.

What is the difference between log and ln?

log() is the common logarithm (base 10). ln() is the natural logarithm (base e ≈ 2.71828). log(100) = 2; ln(e) = 1.