use the given information to complete the triangle:
A = 60 degrees a = 9 c = 10
We can use the Law of Sines to solve for angle C, as we know that
sin(A)/a = sin(C)/c. Plug the known values for A, a, and c in, and solve.
From there, we will have two out of the three angles, and we can solve for angle B as we know that the sum of all three angles in a triangle is 180 degrees. It should be fairly straightforward to solve for side b, as we can use the Law of Sines again.