Applications Zoom20/30/35 Pro | 53
Traverse Use the traverse subapplication to calculate the position of a new point using the bearing and the distance
from a known point. Offset optional.
11.6.3 Intersections
Access Select the desired COGO method from the COGO menu.
Bearing-Bearing Use the bearing-bearing subapplication to calculate the intersection point of two lines. A line is defined by
a point and a direction.
Bearing-Distance Use the bearing-distance subapplication to calculate the intersection point of a line and a circle. The line
is defined by a point and a direction. The circle is defined by the center point and the radius.
Distance-Distance Use the distance-distance subapplication to calculate the intersection point of two circles. The circles are
defined by the known point as the center point and the distance from the known point to the COGO point
as the radius.
Known
P1 Known point
Direction from P1 to P2
d1 Distance between P1 and P2
d2 Positive offset to the right
d3 Negative offset to the left
Unknown
P2 COGO point without offset
P3 COGO point with positive offset
P4 COGO point with negative offset
d1
d2
d3
P1
P3
P2
P4
• Brg-Brg • Dst-Dst
• Brg-Dst • Ln-Ln
Known
P1 First known point
P2 Second known point
1 Direction from P1 to P3
2 Direction from P2 to P3
Unknown
P3 COGO point
P1
P2
P3
1
2
Known
P1 First known point
P2 Second known point
Direction from P1 to P3 and P4
r Radius, as the distance from P2 to P4 or P3
Unknown
P3 First COGO point
P4 Second COGO point
r
P1
P2
P4
P3
Known
P1 First known point
P2 Second known point
r1 Radius, as the distance from P1 to P3 or P4
r2 Radius, as the distance from P2 to P3 or P4
Unknown
P3 First COGO point
P4 Second COGO point
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