You are Here: Home

# Maths bearing question

Maths and statistics discussion, revision, exam and homework help.

Announcements Posted on
1. Maths bearing question
Click on the link below to see the question and my working with my answer:
http://img641.imageshack.us/img641/5...rkingwitha.png

As you can see i get an answer of 158 degrees, but the mark scheme says 154 degrees.What have i done wrong... or is the mark scheme incorrect?

thanks
Last edited by John taylor; 05-05-2012 at 15:10.
2. Re: Maths bearing question
I get "domain unregistered" when I click on your link but that could just be my internet.
3. Re: Maths bearing question
I re-done the link, it should work.
4. Re: Maths bearing question
the marking scheme is incorrect you are right
5. Re: Maths bearing question
but the sentence " B and Q are the same distance from P" make me doubt something...
6. Re: Maths bearing question
I'm a bit confused here: B and Q are the same distance from P so that makes triangle BPQ isosceles, which implies that angle B = angle Q. But that means that RQX cannot be 68 degrees. So it looks like either there's a mistake in the question or I'm having a bad day.

This will be really embarassing if I've made a glaring error since I teach this stuff!
Last edited by notnek; 05-05-2012 at 15:28.
7. Re: Maths bearing question
But if we find angle PQX by 180-68=112 then followed by finding angle PQB by 180-112=68 making it right.However the sentence B and Q are the same distance from P make me confused also....
8. Re: Maths bearing question
i get what you guys mean, obviously the opposite angle should be 68 degrees but if it is isosceles then each of the bottom two angles of the triangle would be 71 degree which is strange. Its a specimen paper, i guess theres a mistake with the question!
9. Re: Maths bearing question
(Original post by notnek)
I'm a bit confused here: B and Q are the same distance from P so that makes triangle BPQ isosceles, which implies that angle B = angle Q. But that means that RQX cannot be 68 degrees. So it looks like either there's a mistake in the question or I'm having a bad day.

This will be really embarassing if I've made a glaring error since I teach this stuff!
His previous link was working, but i didn't answer because that sentence also confused me, i thought i am the only person getting confused at it, but glad i am not the only person struggling at it.
10. Re: Maths bearing question
(Original post by John taylor)
i get what you guys mean, obviously the opposite angle should be 68 degrees but if it is isosceles then each of the bottom two angles of the triangle would be 71 degree which is strange. Its a specimen paper, i guess theres a mistake with the question!
11. Re: Maths bearing question
(Original post by raheem94)
His previous link was working, but i didn't answer because that sentence also confused me, i thought i am the only person getting confused at it, but glad i am not the only person struggling at it.
Yes, I was also slightly wary to post, just in case I'd made a mistake in a GCSE question. I think I need more confidence .
12. Re: Maths bearing question
(Original post by raheem94)
I found it here.
13. Re: Maths bearing question
(Original post by notnek)
Yes, I was also slightly wary to post, just in case I'd made a mistake in a GCSE question. I think I need more confidence .
Similar case.

I also didn't wanted to say the question is wrong, and then get embarrassed if the question is correct. I saw that you are also trying to answer it, so i thought i should leave it you, but never knew, you also lack confidence like me.
14. Re: Maths bearing question
(Original post by notnek)
I found it here.
Probably the conclusion is, the question is flawed.
15. Re: Maths bearing question
(Original post by raheem94)
Probably the conclusion is, the question is flawed.
Yes, there's definitely a mistake.

When it says: "Diagram NOT accurately drawn", they must mean that the numbers may also not be correct .
16. Re: Maths bearing question
(Original post by notnek)
Yes, there's definitely a mistake.

When it says: "Diagram NOT accurately drawn", they must mean that the numbers may also not be correct .
17. Re: Maths bearing question
when it say "Diagram NOT accurately drawn" mean that the diagram cannot be used directly using protactor and ruler to measure angle and sides.
18. Re: Maths bearing question
(Original post by tyre)
when it say "Diagram NOT accurately drawn" mean that the diagram cannot be used directly using protactor and ruler to measure angle and sides.
We know the meaning of it, notnek is just kidding!
19. Re: Maths bearing question
ok
20. Re: Maths bearing question
I think the mark scheme is wrong. Your working out looks clear and correct. You've identified the corresponding angles, worked out the final angle in the triangle and 128+74 = 202, so 360-202 = 158 degrees as the bearing.

## Step 2: Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank

this is what you'll be called on TSR

2. this can't be left blank

never shared and never spammed

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
1. By completing the slider below you agree to The Student Room's terms & conditions and site rules

2. Slide the button to the right to create your account

You don't slide that way? No problem.

Last updated: May 5, 2012
Study resources