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1.     A helicopter departs from an airport flying at a speed of 90 miles per hour at a bearing of 250° for 20 minutes before landing on a helipad.

Determine the helipad’s location in relation to the airport. Round to the nearest tenth of a mile. Show all your work and explain your reasoning.

 May 14, 2020
 #1
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Bearing is usually  measured from a north-south line

So....I'm taking  250°  as  being  the standard position in trig  (this puts  the helipad in the 3rd quadrant )

 

So.....using my assumption  the helicopter  has traveled   90* (1/3 hr)  =  30  miles

 

Assuming that the airport  is at (0,0)....the position of the  helipad is

 

(30cos 250°, 30 sin 250°)  =  ( -10.3 , -28.2)

 

cool cool cool

 May 14, 2020

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