trigo

The pilot of an airplane left A and flew 200 miles in the direction S 20deg20mins W. He then turned and flew 148 miles in the direction S 69deg40mins E. If he now heads back to A, in what direction should he fly?

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  1. The pilot travels 200 miles S at
    20 deg.-20 min. When he changes direction, he makes a 90 deg angle
    (20 deg.-20min.) + (69deg.-40 min.) =
    90 Deg. During his return path, he completes the rt. triangle.
    TanA = 200/148 = 1.3514, A = 53.5 deg.
    B = 90 - 53.5 = 36.5 deg. = 36 Deg,30min.
    Return Dir. = 36 Deg,30min - 20deg,20
    =N 16deg.,10 min. W.

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    posted by Henry

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