Solve 6cos(6x)=5 for the smallest three positive solutions

Question

Give your answers accurate to at least two decimal places, as a list separated by commas.

Answer 1

cos6x = 5/6

6x = 33.5573, 326.4427, 393.5573

x= 5.593, 54.4071, 65.593

x= about 5.60, 54.41, 65.59 degrees

6cos(6(5.6))= 6cos(33.6)=6(5/6)=5