The heights h (in feet) of two people in different seats on a ferris wheel can be modeled by h1=28cos10t+38 and h2=28cos(10(t-Pie/6))+38, 0 is less than or equal to t and 2 is greater than or equal to t. t is the time ( in minutes). When are the two people at the same height?

this is another one that has been stumping me

thanks again for the help