sneakersolequeen
26.06.2019 •
Mathematics
Aplane takes off and travels at an angle of 40° north of east at 110mph for 2 hours. it then adjusts its path to head 10° west of north and travels in that direction for half an hour at a speed of 100mph. approximately how far away is the plane from its starting point?
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Ответ:
248.80 miles ( Approx)
Step-by-step explanation:
Let A shows the initial position of the plane, B shows the position of plan after traveling at an angle of 40° north of east at 110 mph for 2 hours and C represents the final position of plan.
Then According to the question,
miles ( because plane traveled for 2 hours with the speed of 110 mph)
miles ( Because plane traveled for 1/2 hour with the speed of 50 mph)
Now, ( shown on diagram)
Thus, By cosine law,
Thus, the plane is 248.80 miles from its starting point.
Ответ:
Step-by-step explanation:
In the picture.
I hope that it's a clear solution.