A ship leaves a port P and travels 30 km due north. Then it changes course and travels 20 km in a direction 30*(*=degree) east of north to reach port R. calculate
the distance from P to R.
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2
Answer:
48.36 km
Explanation:
Ship travels = 30 km N
Then Ship travels 20 km in a direction 30 degree east of north
=> North = 20Cos30 = 10√3 = 17.32 km
East = 20 Sin30 = 10 km
Total North from P = 30 + 17.32 = 47.32 km
Total East from P = 10 km
Distance between P & R = √(47.32)² + 10² = 48.36 km
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