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word problem

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An airplane is flying with a heading of 60 degrees east of north at 450 mph. A wind is blowing at 37 mph from the north. Find the plane's ground speed to the nearest mph and direction to the nearest degree.
Thanks.

  • word problem - ,

    the plane is traveling South with the wind at 37 miles per hour
    It is flying North in the air at 450 cos 60 = 225
    so its speed North = 225 - 37 = 188
    its speed East is 450 sin 60 = 389
    so
    total speed = sqrt(188^2 + 389^2)
    =sqrt (186665)
    = 432 mph
    tan angle east of north = 389/188 = 2.07
    angle = 64.2 = 64 degrees

  • word problem - ,

    hj

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