When an automobile travels uphill or down hill on a highway,

Last updated: 8/4/2022

When an automobile travels uphill or down hill on a highway, it experiences a force due to gravity. This force in pounds is called grade resistance and is modeled by the following equation, where θ is the grade and W is the weight of the automobile. F = W sin θ A 3340 lb car traveling downhill has a grade resistance of -230 lb. What is the angle of the grade? 0=_____________