What This Scientific Calculator Does

Feature	Description
Basic Operations	Add, subtract, multiply, divide
Trigonometric Functions	sin, cos, tan, asin, acos, atan
Logarithmic Functions	ln (natural log), log (base 10)
Exponential & Power	e (Euler’s number), x², √ (square root)
Constants	π (Pi)
Angle Modes	DEG (degrees) / RAD (radians)
Memory Functions	MR (recall), MS (store), MC (clear)
Keyboard Support	Full keyboard control
Dark/Light Theme	Toggle between themes

Functions Available

Category	Functions
Trigonometry	sin, cos, tan, asin, acos, atan
Logarithms	ln (natural log), log (base 10)
Power/Root	x², √ (square root), e (exponential)
Constant	π (3.14159…)
Basic	+, -, ×, ÷, =, C, ⌫

How to Use

Basic Calculation:

1. Type numbers (e.g., 1 2 3)
2. Press operator (+, -, ×, ÷)
3. Type next number
4. Press = or Enter

Trigonometric:

1. Press sin, cos, or tan
2. Enter angle
3. Result appears instantly

Example: sin(30°)

• Set mode to DEG
• Press sin
• Enter 30
• Result: 0.5

Logarithm:

• Press log for base 10, ln for natural log
• Enter number
• Example: log(100) = 2

Power/Square Root:

• Enter number
• Press x² for square, √ for square root
• Example: 5² = 25, √25 = 5

Angle Modes

Mode	Description	Example
DEG	Degrees (0-360)	sin(30°) = 0.5
RAD	Radians (0-2π)	sin(π/6) = 0.5

Memory Functions

Button	Function
MS	Store current value to memory
MR	Recall stored value
MC	Clear memory

Keyboard Shortcuts

Key	Action
0-9	Enter numbers
.	Decimal point
+	Addition
-	Subtraction
*	Multiplication
/	Division
Enter or =	Calculate
Escape	Clear all (C)
Backspace	Delete last character
s	sin
c	cos
t	tan

Example Calculations

Expression	Result (DEG)	Result (RAD)
sin(30)	0.5	sin(30 rad) = -0.988
cos(60)	0.5	cos(60 rad) = -0.952
tan(45)	1	tan(45 rad) = 1.619
log(100)	2	2
ln(20)	2.9957	2.9957
√64	8	8
12²	144	144
π	3.14159…	3.14159…
e^2	7.389	7.389

Error Handling

The calculator shows “Error” for:

• Division by zero
• Square root of negative numbers
• Log of zero or negative numbers
• Inverse trig functions outside [-1, 1]