i need help solving line ef to get a bearing reading for EF?

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i need help solving line ef to get a bearing reading for EF?

Mathematics
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|dw:1349625787746:dw|
i also need help with this one too.
I need help solving for GH to get a bearing reading for GH?

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|dw:1349626044094:dw|
  • phi
why don't you add 40 degrees to S 60 W to get S 100 W that does not look standard, I would say bearing 280 degrees or maybe N 80 W ?
|dw:1349646083782:dw|
  • phi
The rightmost column is cut off
  • phi
But azimuth starts with 0 degrees means North, 90 means East, 180 South and 270 is West A is easy. Can you try?
first one is east, second one os west, and third one iseast as well
if i try this can you see if i'm correct
for the first one i got 159.83 for azimuth?
for c i got 349.5, and for e. i got 139.83?
for B and D idk what to do?
  • phi
for A. N. 20 DEG. 10 SEC. E that means start at North and turn 20 degrees 10 secs towards the east. That is exactly how azimuth goes. Can you try again for A?
  • phi
C N 10 DEG. 30 SEC. W. Are you sure about 30 seconds? It goes Degrees, Minutes, Seconds 60 seconds in a minute, and 60 minutes in a degree (that means 1 second is 1/3600 degree, which is a very tiny angle)
for a did you get 69.83?
  • phi
If it were N 10 deg, 30 min W then your answer c i got 349.5, would be correct. but if it is 30 seconds, no
  • phi
The azimuth for A is just 10 deg 10 seconds or 10.00278 degrees
okay, and how do i do the others up top? cause it looks different
  • phi
which one?
the first two up top with a graph because they just have degrees with no seconds
  • phi
The first one shows S 60 W that means start at South and turn 60 degrees toward West. Can you change that to azimuth (0 to 360 degrees)? Remember South is 180 degrees and as you turn toward West (at 270) the angle gets bigger.
and yes for c it is N. 30 degrees and 10 seconds?
and i still don't know what B and D are?
  • phi
I don't want to confuse you. Let's first answer one question The very first one. It says S 60 W and then turn another 40 degrees. S 60 W is the same as 180+60= 240 add another 40 degrees: 240+40= 280 so the answer is 280 degrees or N 80 W
  • phi
Can you answer the 2nd question N 58 E and then turn another 53 degrees ?
  • phi
You never answered, are you sure it says seconds ?
yes
sorry i was busy
the second graphed equation i got 95 is that correct?
  • phi
How ?
90-53=37, 37+58=95
  • phi
why are you doing 90-53? look at this picture |dw:1349650416701:dw|
53 degrees sit under 58 degrres and your missing it in the graph
  • phi
N 58 E is 58 degrees from North. Now add 53 more degrees to get to H. If they want azimuth, it would be 58+53= 111 degrees Notice that this is S (180) then 69 degrees towards East or S 69 E
|dw:1349650772940:dw|
okay, amd for tese two i need help. i get 15 degrees for the first one and for the second one i get 105 degrees is this correct?
  • phi
For the picture on the left, what is the angle? Are you supposed to find B?
15 degrees?
  • phi
I don't understand what the question is for these pictures. Find what?
it says solve the following then it just says bearing of AB and it say the same for CD
  • phi
to find AB, we need to know the angle between N 75 W and B. Did they give it?
yeah 90 degrees
  • phi
OK then N 75 W + 75 gets you to North (0 deg). we still have 15 more degrees. So the answer is either 15 degrees azimuth or N 15 E ( I am not sure which format they want) what is the angle between S 40 E and CD in the right picture?
for CD i got 105 degrees?
  • phi
I can't help unless I know the angle between S 40 E and CD
the angle for that is 75 degrees
  • phi
|dw:1349651615722:dw|
  • phi
It is not 105. Azimuth is more than 180 (South is 180)
|dw:1349651719097:dw|
i got 105?
  • phi
If you are at S40E and turn 40 degrees to the South which way are you pointing?
counter clockwise
  • phi
If you are at S40E and turn 40 degrees to the South which way are you pointing? You are at 180 degrees or South. now keep going another 35 degrees
215?
  • phi
Yes, or S 35 W notice that S 35 W was easy to find: You start at S and go 35 W so S 35 W

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