Find the exact solution of the equation.
25cos^(-1)x-4pi =cos^(-1)x
The solution set is .
(Simplify your answer, including any radicals. Type an exact answer, using radicals as needed.)
Find the exact solution of the equation
25cos-1-4=cos-1x
The solution set is (Simplify your answer, including any radicals. Type an exact answer, using radicals as needed.) K