The braking distance in feet of a car traveling at v miles per hour is given by d=1/20v^2 + 2.2v
1 answer:
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Given:
angle ECB=51 degrees
=>
angle EOB = 2*angle ECB = 2*51 = 102 degrees = arc EAB
Also given minor arc AB = 72 degrees
therefore
minor arc EA = 102-72=30 degrees
