Question

How do you solve `cospi(x) = 3/4`?

Answer 1

Solve `cos (pix) = 3/4`
`x = +- 13.19` deg

Explanation:

Calculator gives -> `cos (pix) = 3/4` -->`pix = +- 41,41` deg

`x = +- 41.41/3.14 = +- 13.19` deg