Question

The magnetic bearing of a line AB is S $S{38}^{\circ }{30}^{\prime }W$. True bearing of line AB, if magnetic declination is $4^{\circ }{30}^{\prime }W$, will be ___________

• A. $S{34}^{\circ }W$
• B. $S{43}^{\circ }W$
• C. $S{33}^{\circ }W$
• D. $S{42}^{\circ }W$

Answer 1

The correct option is A $S{34}^{\circ }W$



$Given,Declination=4^{\circ }{30}^{\prime }W$

$\therefore Truebearing=S{38}^{\circ }{30}^{\prime }W-4^{\circ }{30}^{\prime }$

$=S{34}^{\circ }{0}^{\prime }W$