### Home > CALC > Chapter 9 > Lesson 9.4.1 > Problem 9-112

9-112.

Graph the curves and determine the points of intersection.

For the second integral, use integration by parts.

Let *f* = cos^{–1}(*x*) and *dg* = 1*dx*.

9-112.

Graph the curves and determine the points of intersection.

For the second integral, use integration by parts.

Let *f* = cos^{–1}(*x*) and *dg* = 1*dx*.