Pure mathematics is, in its way, the poetry of logical ideas. --- Albert Einstein ...Economics is nothing but Mathematics -Dr.Ahsan Abbass...Symmetry is Ornament of Mathematics-Zulfiqar Ali Mir...Law of Nature are But Mathematical Thoughts of God - Euclid (Father of Geometry)...Mathematics is about Number and pattern among these nos.-Sir Zulfiqar A Mir,... Number Theory is Foundation of Mathematics-Sir Zulfiqar Ali Mir

Monday 28 January 2013

Bearing

Bearing

(navigation)


In land navigation, bearing means the angle between a line connecting us and another object, and a north-south line. (ie, a meridian)

A standard Brunton Geo compass, used commonly by geologists and 
surveyors to obtain a bearing in the field.






Video Lecture on Bearing 
(IGCSE / O' Level)






















Further Topics Study Required: Trigonometry

Problem
A pilot is flying at 168 mph. She wants her flight path to be on a bearing of 57 degrees and 40 minutes. A wind is blowing from the South at 27.1 mph. Find the bearing the pilot should fly, and find the plane's ground speed.
Hint:

Can you use the Law of Cosines to solve for x?



Then, use Law of Sines to solve for the angle at A.



 

The angle at B is 57 degrees and 40 minutes.