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Trilateration Calculator, Excel 97 .xls Spreadsheet with Trigonometric, Vector Analysis and Linear Algebra operations |

TRILATERATION

Two spheres intersect in a circle and a third sphere doesn't intersect. |

One sphere intersects two other spheres, which don't intersect each

other, forming two circles.

other, forming two circles.

No mutual intersection between all 3 spheres, but in pairs; forming 3 circles.

All 3 spheres mutually intersect at 2 points.

No position can be calculated from 3 spherical propagations except

for the last instance above. Even then a 4th propagation is needed to

determine if the position is above or below the plane of*ABC *(**D **or **D'**).

for the last instance above. Even then a 4th propagation is needed to

determine if the position is above or below the plane of