xpack said:Let speed be s
s^2 = 4^2 + 9^2
s^2 = 377
s = 19.4 mph
Ө = Tan^(-1) [ 19/4 ] = 78.1°
3 figure bearing is thus 180 ° - 78.1 ° = 101.9 °
109.1 ° = N 11.9 ° W.
Why 109.1 ° = N 11.9 ° W.
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