If a person bends at the waist with a straight back making an angle of 0 degrees with the horizontal, then the force F exerted on the back muscles can be modeled by the equation shown below, where W is the weight of the person. Complete parts (a) through (c). 0.6W sin (0 +90°) F= sin 12°

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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a) Calculate F when W=120 lb and θ=30°?
b) Use an identity to show that F is approximately equal to  W cos θ
c) For what value of θ is F​ maximum?
If a person bends at the waist with a straight back making an angle of 0 degrees with the horizontal, then the force F exerted on the back muscles can be modeled by the equation shown below,
where W is the weight of the person. Complete parts (a) through (c).
0.6W sin (0 +90°)
F=
sin 12°
Transcribed Image Text:If a person bends at the waist with a straight back making an angle of 0 degrees with the horizontal, then the force F exerted on the back muscles can be modeled by the equation shown below, where W is the weight of the person. Complete parts (a) through (c). 0.6W sin (0 +90°) F= sin 12°
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