inverse cosine การใช้

:The distance between ttwo points of the unit sphere is given by the inverse cosine of their dot product.
The last function is equal to the inverse cosine trigonometric function \ arccos ( x ) in the entire complex domain.
Algorithms using the other formulas are similar, but each using different tables ( sine, inverse sine, cosine, and inverse cosine ) in different places.
The angle of apparent wind ( \ beta ) can be calculated from the measured velocity of the boat and wind using the inverse cosine in degrees ( \ arccos)
The transform converts spatial variations into frequency variations, but it does not change the information in the block; the original block can be recreated exactly by applying the inverse cosine transform.