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A yacht leaves a dock at a bearing of S 1.4 degrees E and a speed of 20 knots over 428 nautical-miles. a. How long will it take the yacht to make the trip b. How far east and south is it after 12hr?
Wiki User
∙ 10y ago
1 knot = 1 nautocal mile per hour.
So 428 nm @ 20 knots per hour will take 428/20 = 21.4 hours.
After 12 hours, it is 20*12 = 240 nautical miles away.
Its distance East is 240*cos(1.4deg) = 239.9 nautical miles and
its distance South is 240*sin(1.4deg) = 5.9 nautical miles.
Wiki User
∙ 10y ago
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