# Answer to Question #17513 in Calculus for sofia

Question #17513
QUESTION 4 A controller spots two planes at the same altitude flying toward each other (see figure). Their flight paths are 0 20 SW and 0 45 SE . One plane is 150 miles from point P with a speed of 375 miles per hour. The other is 190 miles from point P with a speed of 450 miles per hour. a) Find parametric equations for the path of each plane where t is the time in hours, with 0t  corresponding to the time at which the air traffic controller spots the planes. b) Use the result in part (a) to write the distance between the planes as a function of t . c) Use a graphing utility to graph the function in part (b). When will the distance between the planes be minimum? If the planes must keep a separation of at least 3 miles, is the requirement met?

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