Math.acos(0.26311) gives 1.3045519539106323. But using calculator we get 74.74degree. How to Convert the value to degrees?

Math.acos(0.26311) gives 1.3045519539106323. But using calculator we get
74.74degree. How to Convert the value to degrees?

Using the code Math.acos(0.26311) gives 1.3045519539106323. But using
calculator, we get 74.74 degree.
How to Convert the value to degrees? Please help.