A boat leaves the lighthouse A and sails 5.1 km. At this time it is sighted from lighthouse B. 7.2 km west of A. The bearing of the boat from B is N 65° 10’ E. How far is the boat from B?

Question

anonymous · Answer

Is this using sign and cosine and stuff?
Like precalculas

anonymous · Answer

Do you think you can draw a diagram? 
Or wait, I will. Tell me if it's right.

anonymous · Answer

wait

anonymous · Answer

ok

anonymous · Answer

is my diagram correct?

anonymous · Answer

I think so. I need a minute to work this. And I will explain it?

anonymous · Answer

allright thanks by the way :)

anonymous · Answer

Wait, what is bearing? just.. okay it's left of the first lighthouse (west) right?

anonymous · Answer

Is the second lighthouse also west?

anonymous · Answer

Or wait, is lighthouse B 7.2 km west of lighthouse A? I feel like the wording of this question is bad

anonymous · Answer

maybe

anonymous · Answer

Here, let m show you how I am seeing this

anonymous · Answer

okey thank you for your time klakelyn :)

anonymous · Answer

|dw:1388424127830:dw|