## Trigonometry (11th Edition) Clone

60$^{\circ}$F
Since April is represented by $x=3$, we substitute $x=3$ in the equation to find the value of $t$: $t=60-30\cos\frac{x\pi}{6}$ $t=60-30\cos\frac{3\pi}{6}$ $t=60-30\cos\frac{\pi}{2}$ $t=60-30(0)$ $t=60-0$ $t=60$ Therefore, the maximum afternoon temperature for the month of April is 60$^{\circ}$F.