### Home > PC > Chapter 6 > Lesson 6.1.4 > Problem 6-57

6-57.

Is there a difference between cos^{−1} *x* and

Yes, the first is the inverse function, the second is the reciprocal function of *y* = cos *x*.

6-57.

Is there a difference between cos^{−1} *x* and

Yes, the first is the inverse function, the second is the reciprocal function of *y* = cos *x*.