Help please (1 Viewer)

[George121]

Can someone please work this question out and show ALL working out

thankyou in advance

 

[madharris]

http://www.boardofstudies.nsw.edu.a...general-mathematics-hsc-sample-answers-11.pdf

Question 24, I think they're all worked.

I would do it but I don't have that cool program that every has to show working

 

[George121]

http://www.boardofstudies.nsw.edu.a...general-mathematics-hsc-sample-answers-11.pdf

Question 24, I think they're all worked.

I would do it but I don't have that cool program that every has to show working

I've already checked that out and there's no working out :/

 

[rsagar]

ok dude... this is gonna be long but worth it...

I did the working out, but i got 235 degrees for i)
Is that the right answer ?

 

[Timske]

^ no

 

[rsagar]

Oh wait... I looked at it wrong (LoL - stupid me...)

To get 55 as i)

Explanation: (A) is 121 degrees. To get the angle below the East line (90 degrees => you go 121 - 90 = 31 degrees)
Then since ABC is 114 degrees. The angle on the left of B (below angle ABC = 31 degrees by alt. angles)
Then to find the angle on the right you simply go 180 - 114 - 31 = 35 degrees.
Since the angle you found is 35 degrees, to find the bearing you go 90 - 35 = 55 degrees

 

[madharris]

N(M) is the middle N
i)
< ABN(M) = 180-121= 59degrees
< N(M)BC = 114-59= 055degrees

The rest of the questions are worked out

 

[rsagar]

ii) explained in the answer from 2011 sample answers (just use cosine rule)
and
iii) is also explained 2011 sample answer

Hope this has helped you buddy

 

[George121]

ahh i understand it now thanks for the help guys!