43) What is the true bearing of the line, if magnetic bearing of a line is 336 Degree and magnetic declination is 5 Degree E?

44) What is the magnetic bearing of the line, if true bearing of a line is 85 Degree 30 Minutes and the magnetic declination is 4 Degree East?

45) What is the back bearing of line PQ, if fore bearing of line PQ is 212 Degree 45 Minutes?