Make sure to use constants & methods from Math class only and all non-integer numerical literals are suffixed w/ d
:
Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Math.html
TAU
→2 * Math.PI
cos(PI)
→Math.cos(Math.PI)
-5.4
→-5.4d
1e3
→1e3d