Lucy Loo - 1 year ago 121
C++ Question

# Converting from Radians to Degrees

I'm building a small Physics engine and I'm having trouble converting my Radian value to Degrees using

`atan`
, as I need an angle to output in Degrees only.

Firstly, I have an
`x`
and
`y`
value, and I need to find an angle using
`atan`
, so I divide y by x like so:

``````angleDivide = yN / xN;
``````

Then, before putting this value into
`tan`
, I attempt to convert it to Degrees like this:

``````angleToDegrees = angleDivide * (3.14 / 180);
``````

Then I place angleToDegrees into
`atan`
:

``````angle = atan(angleToDegrees);
``````

But when I'm displaying
`angle`
, I'm, still getting radian values.

Please could you tell me what is wrong with my code and how to fix this?

You want to calculate `radians=tan(y/x)` first.

Then you can convert it to degrees:

``````radians = atan(y/x)
On a side note, you also have to take into account what quadrant you are in to get the correct answer (since `-y/x` is the same number as `y/-x`)