hhopke
  • hhopke
Will draw diagram. Geometry (Bearings, not usually taught in the US but if you know it please help me). The diagram sails from A to B on a bearing 168° and them from B to C on a bearing 078°. AB=BC. Work out the bearing from C to A.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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hhopke
  • hhopke
|dw:1449820448064:dw|
Kainui
  • Kainui
Here, it might help if you draw it a bit more exaggerated:|dw:1449820743839:dw| The 168 degree angle is sorta right on top of the angle we want to solve for, which is where I labeled it with a ?.
Kainui
  • Kainui
I think you already started filling in some of the other angles which is great, keep doing that.

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hhopke
  • hhopke
|dw:1449821058091:dw||dw:1449821390633:dw|
hhopke
  • hhopke
|dw:1449821539912:dw||dw:1449821561161:dw|
hhopke
  • hhopke
Oh its an isosceles triangle
hhopke
  • hhopke
|dw:1449821747554:dw|
hhopke
  • hhopke
So x+z=168 and y+z=102. Since the triangle is right (78+12=90) that makes it a 45-45-90 triangle! :) :) :)
hhopke
  • hhopke
So 168-45=123! Oh this is great.
hhopke
  • hhopke
Thank you SO much!
Kainui
  • Kainui
Haha I barely did anything, glad I could help though XD

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