bearings question

Announcements Posted on
TSR looking different to you this week? Find out why here. 02-12-2016
    Offline

    3
    (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.
    Offline

    3
    (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.
    Offline

    2
    ReputationRep:
    (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:
    Offline

    3
    ReputationRep:
    I drew my diagram using the fact that theta was 78.6
    Offline

    3
    (Original post by TenOfThem)
    I drew my diagram using the fact that theta was 78.6
    No comment. (see C2). :p:
    Offline

    3
    ReputationRep:
    (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
    Offline

    2
    ReputationRep:
    Yeah just did it ignoring the diagram

     \cos^{-1}\left(\frac{19}{96}\right)=78.  58...
    • Thread Starter
    Offline

    0
    ReputationRep:
    thanks guys.
    Offline

    2
    ReputationRep:
    (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
    • Thread Starter
    Offline

    0
    ReputationRep:
    (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?
    Offline

    2
    ReputationRep:
    (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

    I just checked out bitesize
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: July 10, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR
Poll
How are you feeling about doing A-levels?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read here first

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.