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trig

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A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.

  • trig - ,

    150 at 155° = 63.4i -135.9j
    25 at 160° = 8.6i - 23.5j
    sum = 72.0i - 159.4j = 175.0 at 155.7°

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