## Trigonometry (10th Edition)

$F = 425$
$F = \frac{0.6W~sin(\theta+90^{\circ})}{sin~12^{\circ}}$ Let $W = 170~lb$ and let $\theta = 30^{\circ}$ $F = \frac{(0.6)(170)~sin(30^{\circ}+90^{\circ})}{sin~12^{\circ}}$ $F = \frac{102~sin(120^{\circ})}{sin~12^{\circ}}$ $F = 425$