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    kala1's Avatar
    kala1 Posts: 1, Reputation: 1
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    #1

    Mar 5, 2010, 10:12 AM
    Trignometry(bearing)
    A destroyer and cruiser leave a port at the same time. The destroyer sails at 38 knots on a bearing of o420 and the cruiser sails at 25 knots on a bearing of 3150 . How for apart are ships two hours later?
    [ 1 knot is a speed of 1 nautical mile per hour.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Mar 5, 2010, 12:19 PM

    Make a sketch so that you may see how a triangle is formed. You can get two sides of the triangle by working out the distance covered by each ship using their speed and the time they maintained that speed.

    Then, use the cosine rule to find their distance apart.
    Mike isaac's Avatar
    Mike isaac Posts: 2, Reputation: 1
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    #3

    May 24, 2012, 10:43 AM
    A boat soils 4km on a bearing 038degree and then 5km on a bearing of 067degree.(a)how far is the boat from its starting point? (b)calculate the bearing of the boat from its starting point?
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