How do you find the area under the graph of #f(x)=sin(x)# on the interval #[-pi,pi]# ?
For this question to have to set up a definite integral.
We see that this integral is bounded from
Also remember that after we integrate we have to subtract the result of the lower bound,
Be careful with all of those double negatives which resolve to positives.
Lastly, remember from the unit circle that both