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# C2 Trig Question: watch

1. (Original post by danconway)
Aha aw, well anything to help, and thanks for the rep!

I'll be off to bed – have fun with the rest of the problem (although going to bed is a great idea for everyone!); I can always help more tomorrow if you need it, but hopefully you can work it out from here!
Oh no.. I've gotten stuck on a similar question! Can you see where I went wrong? :/

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2. (Original post by creativebuzz)
Oh no.. I've gotten stuck on a similar question! Can you see where I went wrong? :/

I reckon, to find the ferry, you have to draw a line of 3.2 km FROM the port on a bearing of 076º (i.e. draw that line from the port upwards and rightwards).
3. (Original post by danconway)
I reckon, to find the ferry, you have to draw a line of 3.2 km FROM the port on a bearing of 076º (i.e. draw that line from the port upwards and rightwards).

Ah now it looks better Okay so I'm guessing that I should use cosine to find the missing length! But how do I find the bearing of the cargo ship from the ferry?
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4. (Original post by creativebuzz)

Ah now it looks better Okay so I'm guessing that I should use cosine to find the missing length! But how do I find the bearing of the cargo ship from the ferry?
Sine rule to find that the small angle in the triangle, then draw a line up to represent North from the ferry. Then you should spot an opportunity to apply the co-interior angle rule. Then you can find the bearing. Not explained particularly well - if you can't work that out, I'll draw you a diagram

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