The force

The force F (in pounds) on a person’s back when he or she bends

over at an angle e from an upright position is modeled by

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F= 0.6W sin (θ+90)/ sin 12°

where W represents the person’s weight (in pounds).

(a) Simplify the model.

(b) Use a graphing utility to graph the model, where

W = 185 and 0° <e < 90°. (Link if you can plz)

(c) At what angle is the force maximized? At what angle is the force

minimized?