Among the myriad of questions posed here, many are inquiring about converting the output of functions like Math.atan() into degrees for use in CSS transforms or OpenGL.
The solution is a simple calculation (180/Math.PI)--yet it requires writing additional code each time trigonometric operations are performed.
Is there a Javascript library that operates in degrees? One that offers a variety of helpful math functions, perhaps?
Most mathematical functions that deal with rotations use radians as the standard unit of measurement.
Using degrees in a library would only result in everything being converted back to radians behind the scenes, rendering it inefficient.
Therefore, if you prefer working in degrees, ensure that both your input and output are in degrees for ease of human interaction. When needed for calculation purposes, convert them to radians using a suitable method. Keeping the computations in radians is optimal for computer efficiency, as degrees may be more aesthetically pleasing but are not necessary for machine processing.
When using the expression parser within the math.js library, you have the ability to include units such as radians and degrees in your calculations. This means you can input expressions like:
math.eval('cos(pi/3'); // 0.5
math.eval('cos(60 deg)'); // 0.5
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