Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 7 - No. 41)
If a boat sails 6km on a bearing of 000 degrees (North) and then 8km on a bearing of 090 degrees (East), which theorem would you use to calculate the distance from the starting point?
Law of Sines
Pythagorean Theorem
Law of Cosines
None of the above
Explanation
Use the Pythagorean Theorem (a² + b² = c²)