Multiple choice Evaluate: $\int \limits_0^\infty \frac{sin t}{t}dt$ x $\frac{\pi}{2}$ $\frac{\pi}{4}$ $\frac{\pi}{3}$ Reveal answer Fill a bubble to check yourself B Correct answer Explanation The integral of (sin t)/t from 0 to infinity is a standard Dirichlet integral, which evaluates to pi/2.