1. What is the Sine Function?

The sine function is a fundamental trigonometric function that describes the ratio of the length of the opposite side to the hypotenuse in a right-angled triangle. It's periodic with a period of 2π and oscillates between -1 and 1.

2. How Does the Calculator Work?

The calculator computes the sine of 2 radians using PHP's built-in sin() function:

Where:

• 2 — Angle in radians (not degrees)

Explanation: The calculation uses the mathematical sine function which is implemented in PHP with high precision.

3. Importance of Sine Calculation

Details: The sine function is crucial in mathematics, physics, engineering, and signal processing. It's used to model periodic phenomena like sound waves, light waves, and alternating current.

4. Using the Calculator

Tips: Simply click the "Calculate" button to compute sin(2). The result is displayed in the output field.

5. Frequently Asked Questions (FAQ)

Q1: Is the angle in degrees or radians?
A: The calculation uses radians. To convert degrees to radians, multiply by π/180.

Q2: What is the range of sine values?
A: The sine function returns values between -1 and 1 inclusive.

Q3: How precise is this calculation?
A: The calculation uses PHP's built-in sin() function which provides high precision results.

Q4: What is sin(2) approximately equal to?
A: sin(2) ≈ 0.909297, where 2 is in radians.

Q5: Can I calculate sine of other values with this?
A: This specific calculator only calculates sin(2). For other values, you would need a more general calculator.