FORESTRY
GENERAL FORESTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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N50W
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N10W
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S10E
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S50E
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Detailed explanation-1: -– Quadrant: bearing (trend) direction as determined by an angle <= 90 relative to a North or South compass direction (N30E or S70W). – Azimuth: a trend direction as indicated by an angle 0-360 degrees with North at 0 (or 360), East at 90, South at 180, and West at 270.
Detailed explanation-2: -We can extend the line from A to B, then rotate through 180° to head in the opposite direction. We can see from the diagram above that the bearing from B to A is 300°, because 120° + 180° = 300°. REMEMBER: Bearings in exactly opposite directions are called back bearings and are always 180° apart.
Detailed explanation-3: -An azimuth is the direction measured in degrees clockwise from north on an azimuth circle. An azimuth circle consists of 360 degrees. Ninety degrees corresponds to east, 180 degrees is south, 270 degrees is west, and 360 degrees and 0 degrees mark north.