### Home > APCALC > Chapter 6 > Lesson 6.3.3 > Problem6-109

6-109.

Calculate the area between the curves $y = \sin(x)$ and $y = \cos(x)$ over the interval $[ \frac { \pi } { 4 } , \frac { 3 \pi } { 4 } ]$.

You know the bounds. But do you know what happens between the bounds? Which function is on top and which is on the bottom?

Area between curves $=$

$\int_{A}^{B}((\text{top function})-(\text{bottom function})) dx$

$A =$ left-most bound
$B =$ right-most bound