Change of direction / anchor
Vector forces
Beta
Drag A1 or A2. The two anchors move symmetrically.
Load on each anchor
58%
1.15 kN · 259 lbf each leg
Interior angle
60°
0°90°120°150°
Line tension / load
2.00 kN
- 0°
- 50% each — legs parallel
- 90°
- 71% each
- 120°
- 100% each — critical
- 150°
- 193% each
Directional: R = 2 T cos(θ/2) when both strands equal T. Practical uses haul = T / η, then the law of cosines for the two unequal tensions. Anchor: each leg = Load / (2 cos(θ/2)). Keep interior angles under 90° when you can; treat 120° as a hard thinking point.