Chapter 16, Problem 95P

Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number of $k=3.00$ m-1, an angular frequency of $\omega =2.50$ s-1, and a period of 6.00 s, but one has a phase shift of an angle $\varphi =\frac{\pi }{12}$ rad. What is the height of the resultant wave at a time $t=2.00$ s and a position $x=0.53$ m?