This is only a incomplete syntax, containing only unusual syntax (unusual for php), most goniometric functions work too.
SyntaxEffect
round(n) rounds n to the nearest integer
fpart(n) gives the decimal (fraction) part of n
nCr(m, n) gives the combinations of m and n
nPr(m, n) gives the permutations of m and n
n! gives the factorial of n
m^n m to the power n
pi() gives pi = 3.141592653598793
e() gives e = 2.718281828459045
ln(n) gives the natural log of n
log(n) gives the 10 base log of n
gives n squared (to type: ctrl+alt+2)
gives n to the third (to type: ctrl+alt+3)