Solve the problem.
-Use a tangent function to estimate the grade resistance of a $2500 - \mathrm { lb }$ car travelling on a $- 3.5 ^ { \circ }$ grade. Round your answer to the nearest pound.
A) $- 153$ pounds
B) 936 pounds
C) 468 pounds
D) 306 pounds

Question

Quizplus · Accepted Answer

The grade resistance can be estimated using the formula $F = W \times \tan(\theta)$, where $F$ is the force due to grade, $W$ is the weight of the car, and $\theta$ is the grade angle. For a $-3.5^\circ$ grade and a $2500$-lb car, $F = 2500 \times \tan(-3.5^\circ) \approx -153$ pounds. The negative sign indicates that the grade is downhill.

Solve the Problem 2500−lb2500 - \mathrm { lb }2500−lb Car Travelling on A

Solve the Problem $2500 - \mathrm { lb }$ Car Travelling on A