Concept explainers
For Problems 7.30 through 7.32 the observed magnetic bearing of line AB and its true magnetic hearing are given. Compute the amount and direction of local attraction at point A.
Observed Magnetic Bearing True Magnetic Bearing
7.30‘ N32°30 'E N30” 15 'E
7.31 814°30'VV 314915 'VV
7.32 N9°30 "N N8°20 'E
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