(cosx-1)(3cosx+4)=0cosx-1=0 or 3cosx+4=0cosx=1 or cosx=-4/3
Since the range of cosx is -1 to 1, cosx=1 is a valid solution.
Therefore, the solution to the equation is x = 2πn, где n - any integer.
(cosx-1)(3cosx+4)=0
cosx-1=0 or 3cosx+4=0
cosx=1 or cosx=-4/3
Since the range of cosx is -1 to 1, cosx=1 is a valid solution.
Therefore, the solution to the equation is x = 2πn, где n - any integer.