Scientific Calculator Online
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User Guide
Basic Operations
- Addition (+): Simply enter numbers and press + to add
- Subtraction (-): Use the minus sign for subtraction
- Multiplication (×): Enter first number, press ×, then second number
- Division (/): Use the division symbol to divide numbers
Example: To calculate 23 + 45, enter:
23 + 45 = 68
23 + 45 = 68
Scientific Functions
- Trigonometric Functions: Use sin, cos, tan buttons
- Logarithms: Press log for base-10 logarithm
- Natural Log: Use ln for natural logarithm
- Square Root: Click √ for square root calculation
- Powers: Use ^ for exponents
Example: To calculate sin(30°):
sin(30) = 0.5
sin(30) = 0.5
Memory Functions
- Clear All (AC): Clears the entire calculation
- Delete (DEL): Removes the last entered character
- History: View previous calculations above the display
Frequently Asked Questions
How do I perform complex calculations?
You can combine multiple operations using parentheses. For example:
(sin(45) + cos(30)) * √(16) = 2.532
What angle units are used in trigonometric calculations?
The calculator uses degrees for trigonometric functions. For example:
sin(90) = 1
cos(60) = 0.5
How do I calculate percentages?
To calculate a percentage, multiply by 100. For example:
0.75 * 100 = 75%
How do I use scientific notation?
Enter numbers using e notation. For example:
2.5e3 = 2500
1.2e-2 = 0.012
Can I recall previous calculations?
Yes, your last calculation is always shown in the history display above the main display. You can reference it for your next calculation.