Left Toolbar > Math Nodes > Number Arccosine
The Number Arccosine node allows you to calculate the arccosine function of an angle.
On the left toolbar choose Math Nodes > Number Arccosine
Drag the Number Cosine icon into the Node Graph.
Connect the Output: Result.
Number
A NUMBER type of value.
Result
The number value.
Number
Number value. This attribute is exposed as input by default.