Find the smallest angle x greater than 2520 degrees that satisfies cos(x) = -sqrt(3)/2 and sin(x) = 1/2.
An x between 0 and 360 which satisfies the given sine and cosine is
x = 150˚
Now we need to find 2520/360, which is 7.
All that is left to do is add 2520 to 150, which is 2670˚.
I hope this solution helps!