A physics problem is asking me a to find when a weight on a spring crosses the equilibrium point.
The equation of motion given is $x(t) = \frac{-2}{3}\cos(10t) + \frac{1}{2}\sin(10t)$
Basically, I need to solve for $t$ when $x(t) = 0$. How do I solve for $t$ in such an equation?