Finding the New Azimuth Bearing for Triangulation in Geomagnetic Bearings

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SUMMARY

The discussion focuses on calculating a new azimuth bearing for triangulation in geomagnetic bearings. The user starts at point A, 87.8333 feet from point B with an initial azimuth bearing of 123 degrees. After moving 20 feet, the user seeks to determine the new bearing to point B. The solution involves using the formula for circumference, specifically 2 x r x π, to derive the new bearing without converting to True North.

PREREQUISITES
  • Understanding of azimuth bearings and triangulation techniques
  • Familiarity with basic geometry and trigonometric principles
  • Knowledge of geomagnetic versus true north bearings
  • Ability to perform calculations involving circumference and angles
NEXT STEPS
  • Study the principles of triangulation in navigation
  • Learn about geomagnetic bearings and their applications
  • Explore trigonometric functions relevant to angle calculations
  • Investigate the use of software tools for geometric calculations
USEFUL FOR

This discussion is beneficial for surveyors, navigators, geographers, and anyone involved in geomagnetic studies or triangulation methods.

getting2it
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Draw this description out on a piece of paper if you would like. I cannot figure this out, it has been years since I have done math at this level.

I am standing at point A and have a distance of 87.8333 feet to Point B, my azimuth bearing is 123 degrees. I want to move over 20 feet and find the bearing to the same point B, this distance will also be 87.8333 feet. So I want to triangulate. The question is: What would my new azimuth bearing be to get to Point B, also please show how to solve. Note: I am dealing with geomagnetic bearings, no need to convert to True North.

Thank You
 
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Oh my goodness, after posting above I was sitting here thinking and I remembered 2 pi r squared.

so 2 x r x pi = circumference Divided by 360 times 20 gives me the new bearing. basics basics, thanks anyway to all of you.
 
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