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bearings question

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Original post by zoxe
same as tenofthem, how did you know the position of C1 and C2?


Refering to my diagram, its the bearing of A from B, plus/minus theta.
Original post by SubAtomic
So the diagram in the OPs text book is completely wrong?


It's certainly misleading, C1, so called, is not that close to North.

Mind you, mine's not much better for C2.
(edited 11 years ago)
Original post by ghostwalker
It's certainly misleading, C1, so called, is not that close to North.


Love misleading questions, ending up with acute angles that are clearly obtuse using cosine rule, good old GCSE days :rolleyes:
I drew my diagram using the fact that theta was 78.6
Original post by TenOfThem
I drew my diagram using the fact that theta was 78.6


No comment. (see C2). :p:
Original post by ghostwalker
No comment. (see C2). :p:


lol

t'was only a sketch

I still think it is better than the book's version :smile:
Yeah just did it ignoring the diagram

cos⁡−1(1996)=78.58... \cos^{-1}\left(\frac{19}{96}\right)=78.58...
Reply 27
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zoxe
OP
7
thanks guys.
Original post by zoxe
...


From this I gather it is still a good thing to take some diagrams with a ton of salt and just concentrate on the algebra and all the details which are written.

That diagram had me puzzled.

That 70 needs to be 180-78.6
(edited 11 years ago)
Reply 29
Avatar for zoxe
zoxe
OP
7
Original post by SubAtomic
From this I gather it is still a good thing to take some diagrams with a ton of salt and just concentrate on the algebra and all the details which are written.

That diagram had me puzzled.

That 70 needs to be 180-78.6

After doing these types of questions it seems that I have forgotten a lot of geometric rules learnt at GCSE :\, does anyone have a website which just summarises them?
Original post by zoxe
After doing these types of questions it seems that I have forgotten a lot of geometric rules learnt at GCSE :\, does anyone have a website which just summarises them?


lol I had to refresh just to be sure I didn't confuse or make a fool of myself again:colondollar:

I just checked out bitesize

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