Here are a few more LaTeX codes you may enjoy ... or not.
\circlearrowleft . . . . \circlearrowright .
\curvearrowleft . . . \curvearrowright .
\rightsquigarrow .
\bar{x} .
\langle . . . . . \rangle .
\hdots . . . \cdots . . . . \ddots .
\pmod{n} .
\boxed{x = 1} .
9\choose3 . . . . \binom{9}{3} .
\! . removes a space
. . \sin^2x + \cos^2x produces:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I found that the extra spaces can be confusing.
They can be removed with: \sin^2\!x + \cos\!x: .