Question 742856
An airplane traveling at 225 mph is descending at an angle of 5 degrees.  How many miles will the plane decrease in altitude in 7 minutes?  
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Vertical speed = 225*sin(5) = 19.61 mi/hr
change = 19.61 mi/hr * (1/60) hr/min * 7 min
=~ 2.2878 miles