A 5-foot-tall person is walking towards a 7-foot-tall lamppost at a uniform rate of 2 feet per second. Find how fast the subtended angle of the lamppost from the person is increasing when the person is horizontally 1 foot from the lamppost. Assume the eye level of the person to be also 5 feet for simpler analysis.   a. 33/29 rad/s b. 22/19 rad/s c. 77/65 rad/s d. 11/9 rad/s

Elementary Geometry For College Students, 7e
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Chapter8: Areas Of Polygons And Circles
Section8.4: Cicumference And Area Of A Cicle
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A 5-foot-tall person is walking towards a 7-foot-tall lamppost at a uniform rate of 2 feet per second. Find how fast the subtended angle of the lamppost from the person is increasing when the person is horizontally 1 foot from the lamppost. Assume the eye level of the person to be also 5 feet for simpler analysis.

 

a. 33/29 rad/s
b. 22/19 rad/s
c. 77/65 rad/s
d. 11/9 rad/s

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