SOLUTION: an airplane traveling 350 mph at a cruising altitude of 5.4 miles begins its decent. if the angle of decent is 3 degrees from the horizontal, determine the new altitude after 20 mi

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Question 1053310: an airplane traveling 350 mph at a cruising altitude of 5.4 miles begins its decent. if the angle of decent is 3 degrees from the horizontal, determine the new altitude after 20 minutes
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
There is a right triangle that has +5.4+ mi for its height
and has a hypotenuse of +350t+ where +t+ is flight time in hrs.
Thjis triangle makes a +3+ degree angle with the ground.
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I can say:
+sin%28+3+%29+=+5.4+%2F+%28+350t+%29%0D%0A%7B%7B%7B+.052336+=+5.4+%2F+%28+350t+%29+
+350t+=+5.4+%2F+.052336+
+350t+=+103.1795+
+t+=+.2948+ hrs
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If you fly for longer than this time, which +20+ min
would be, +20%2F60+=+.3333+, then you would crash
into the ground. That would be my answer -you crash after
+.2948%2A60+=+17.69+ min
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