Question

A boat leaves a harbour A on a course of 120 degrees and it sails 50km in this direction until it reaches point B. How far is B east of A and what distance south of A is B?

Answer 1

A boat leaves a harbour A on a course of 120 degrees and it sails 50 km in this direction until it reaches point B. How far is B east of A and what distance south of A is B?

- x – how far is B east of A

- y – how far is B south of A

- x = 50 · sin30° = 25 km

- y = 50 · cos30° = 43,3 km

- B is 25 km east of A

- B is 43,3 km south of A