## Algebra and Trigonometry 10th Edition

$2191.9 \ lb$
The sine of an angle is defined as force over weight. Thus, $\sin \theta=\dfrac{force}{weight}=\dfrac{5000}{15000}$ This implies that $\sin 26^{\circ}=\dfrac{F}{5000}]$ or, $F=5000 \sin 26^{\circ} =2191.9 \ lb$