# How is a Radian written?

https://gyazo.com/b61fecaaa87050be22688c5559cd13a5

The post says " As noted, parameters to `CFrame.Angles()` must be specified in radians , not degrees. If you prefer degrees, simply use the `math.rad()` converter as shown in this example."

How do I write a radian if I’m not converting degree’s into Radian? The article doesn’t seem to say?

You could just use math.deg instead.

print(math.deg(math.pi)) → 180

Hope this helps!

Edit: oh wait, this is for CFrame, let me check something real quick.

What I mean is, they say "CFrame.Angles() must be written in radians, not degrees and they tell you the function to convert a degree → radian. What I’m wondering, is how is a radian calculated or written? Because it didn’t look like they explained how to write a Radian?

Not that it matters, I mean converting degree into radian is fine, this is just for curiosity sake.

Edit: Like what I’m wondering is, how is a Radian written? Is it a float, integer, etc? And how to calculate it. What exactly is math.rad doing to change a degree into radian?

Radian is just a regular number

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I think its something like:

degree * math.pi / 180

The degree is calculated by taking your radian and times it by 180/pi
so R*180/pi to get degree

A radian is a form of angle measurement. Other mathematically acceptable forms of angle measurements are:

• Degrees
• Seconds/Minutes/Hours

You can convert degrees into radians easily with:

``````D * math.pi / 180
``````

assuming `D` is in degrees.

In math equations, radians and polar coordinates are written with the theta symbol (θ), degrees are written in the degree symbol (°), minutes are written with a single tick (’), and seconds are written with a double tick (’’).

Seconds, minutes, and degrees can be combined into one accurate measurement.
`40°20'50"` is very close to `40.34722` degrees.

However, radians are used alone. This is because they are special to trigonometry, geometry, calculus, and more.

`CFrame`s are matrixes, which is calculus. It makes most sense to use radians since it is most accurate and relevant.

Hopefully I answered your question (and gave a ton of useless information haha)

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