Use this half angle formula calculator to easily find the sine, cosine, or tangent of half of a given angle.

## Half Angle Formula Calculator

### How to Use the Half Angle Formula Calculator

This calculator helps you to determine the sine of half of any angle. To use it, simply input the angle in degrees into the field provided and then click on the “Calculate” button. The result will show up in the ‘Result’ field, representing the sine of half the given angle.

### How the Calculator Works

The calculator first converts the angle from degrees to radians since trigonometric functions in JavaScript use radians. After the conversion, it calculates the sine of the half-angle using the mathematical sine function included in the JavaScript Math library. The result is then rounded to four decimal places and displayed for you.

### Understanding the Limitations

The half-angle formula calculator assumes that the input angle is in degrees and needs to be converted to radians. It’s designed to work with numerical values, so make sure to enter a number and not text or special characters. Additionally, due to rounding within JavaScript, the results may have a small degree of inaccuracy, which is common in floating-point arithmetic.