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Math Help - parallelogram

  1. #1
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    Thumbs up parallelogram

    In parallelogram ABCD, the diagonal AC = 521.16 the angle ABC = 110 degrees 48 minutes 12 seconds and BAC = 27 degrees 19 minutes 36 seconds. Find the lengths of the sides ad the other diagonals.

    law of cosines can help..
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  2. #2
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    Law of sine will be easy. Angle ABC, BAC is given. Find BCA.
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