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March 25, 2017

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A ship is 90 miles south and 20 miles east of port. The captain wants to travel directly to port. What bearing should be taken?

  • Triggggggg - ,

    "90 miles south and 20 miles east of port"
    means the direction along which the ship must sail is:
    x=-90, y=20
    angle = atan(20,-90) = 180° - 12°-31'-44"
    = 167°-28'-16" (in trigonometry notation).

    To convert trigonometry notation to bearing, subtract angle from 90° or 450° if the angle exceeds 90°.

    Bearing (clockwise from north)
    = 450° - 167°-28'-46"
    = 282°-31'-44"

  • Triggggggg - ,

    uiuhi

  • Triggggggg - ,

    hi but

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