Convert the Following whole circle bearing to quadrantal bearing : (a) 38°30′ (b) 142°15′ (C) 248°45′ (d) 325°30′
SOLUTIONS :
(a) WCB = 38°30′
Rule: If WCB Is between 0° and 90 °
QB or RB = WCB = N 38°30’E
(b) WCB= 142° 15′
Rule: If WCB Is between 90° and 180°
Q B or RB = 180°- WCB
= 180°-142°15′
= S 37°45’E
(c) WCB = 248°45′
Rule: If WCB IS between 180° and 270°
QB or RB = WCB -180°
= 248°45′ – 180°
= S 68°45′ W
(d) WCB= 325°30′
Rule : If WCB is between 270° to 360°
QB or RB = 360° – WCB
= 360° – 325°30′
= N 34° 30′ W
CONVERSION OF WHOLE CIRCLE BEARING and QUADRANT BEARING
| WCB Between | corresponding . Reduced Bearing | Quadrant |
| 0 and 90′ | RB= WCB | NE |
| 90° and 180° | RB= 180° – WCB | SE |
| 180° and 270° | RB = WCB – 180° | SW |
| 270° and 360° | RB= 360°- WCB | NW |