How do I use and apply the Intermediate value Theorum to prove the following has exactly one solution as follows:

Show that the equation -814 + 49 cos(55x) = 0 has exactly one solution for me 0, 35 ] To check that you are on the right track, complete the following sentences. To show that a solution exists I will use the Intermediate Value Theorem This theorem applies to continuous functions. Note that it doesn't guarantee the solution is unique