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How to Use Basic Calculator Operations

A calculator is a powerful tool for performing arithmetic and scientific calculations. Whether you’re working on simple math problems or advanced functions, knowing how to use its basic operations is essential. This guide will explain each function in a structured way.

Basic Calculator Functions

The calculator interface consists of numeric keys, function keys, and special mathematical operation buttons. Below is a table describing their uses:

Button	Function
0-9	Numeric digits for entering numbers
.	Decimal point for floating numbers
+	Addition operation
–	Subtraction operation
×	Multiplication operation
÷	Division operation
=	Calculates the result
AC	Clears all input
( )	Parentheses for grouping operations
π	Inserts the value of Pi (3.14159…)
^	Exponentiation (power) operation
√	Square root function
sin, cos, tan	Trigonometric functions

Step-by-Step Usage

1. Basic Arithmetic

Addition (+): Press number → + → number → =
- Example: 5 + 3 = 8
Subtraction (-): Press number → - → number → =
- Example: 9 - 4 = 5
Multiplication (×): Press number → × → number → =
- Example: 7 × 6 = 42
Division (÷): Press number → ÷ → number → =
- Example: 8 ÷ 2 = 4

2. Using Parentheses for Order of Operations

Example: (5 + 3) × 2 = 16
- Parentheses ensure addition happens before multiplication.

3. Working with Exponents and Roots

Square Root (√): Press √ → number → =
- Example: √25 = 5
Exponentiation (^): Press number → ^ → exponent → =
- Example: 3^3 = 27

4. Trigonometric Functions

Sine (sin), Cosine (cos), Tangent (tan):
- Press function → number (in degrees or radians) → =
- Example: sin(30) = 0.5

5. Using Pi (π)

Press π to insert the value of Pi.
- Example: π × 2 = 6.28318