Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 3 - No. 4)
If a boat sails 4 km on a bearing of 000 degrees and then 3 km on a bearing of 090 degrees, what is the distance of the boat from the starting point?
5 km
7 km
3.5 km
6 km
Paliwanag
This forms a right triangle. Distance = sqrt(4^2 + 3^2) = 5km