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robert7248
27.10.2021 •
Mathematics
Joe starts 5 feet away from a motion detector. He the walks away from the detector at a rate of 0.5 ft per sec for 4 seconds. He remains still for 2 seconds, and then walks toward the detector at a rate of -2 ft per sec for 3 seconds. How far is Joe from the motion detector when he finishes his walk?
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Ответ:
65 degree, 15 degree
Step-by-step explanation:
In triangle GEF,
∠E = ∠G (Given)
Let's say,
∠E = ∠G = x
∠E + ∠G + ∠F = 180 (Angle sum property of Triangle)
=>x + x + ∠F = 180
=>2x + ∠F = 180
=>2x + 50 = 180
=>2x = 180-50
=> 2x =130
=> x = 130/2
=> x = 65
=>∠E = ∠G = 65
=>∠GEF = ∠EGF = 65 Degree
∠EGF + ∠CGF = 180
=>65 + ∠CGF =180
=>∠CGF = 180 - 65
=> ∠CGF = 15