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Cosine maths

Can someone please tell me how to work out this question, I’m not sure if I’m doing it right and someone has decided to rip the answers out the textbook my teachers have given me. 8AA85F12-125C-4F47-AA7E-957454012EE9.jpg.jpeg

8AA85F12-125C-4F47-AA7E-957454012EE9.jpg.jpeg

It’s question 4, at the top

Reply 1

RDKGames

Study Forum Helper

Original post by Hannahkisley

Can someone please tell me how to work out this question, I’m not sure if I’m doing it right and someone has decided to rip the answers out the textbook my teachers have given me.
It’s question 4, at the top

You want to label your own diagram, given the information. After you sketch your bearings, the answer to (i) should be pretty simple to work out. Then (ii) is just the cosine rule using the two given side lengths, and the angle you find in (i)