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Spherical Triangle Solutions

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ABC
ACa
ACc
ACb
Corner Angle A
70
abc
Aab
Aac
Abc
Side Angle b
80
Side Angle c
60
Single Solution
Corner Angles
A:
70°
B:
91.1161°
C:
61.5482°
Area:
0.74463
2
r
Side Angles
a:
67.7578°
b:
80°
c:
60°
Labels
ABC
ACB
BCA
BAC
CAB
CBA
Notation
Dec
DMS.s
DM.m
Sphere
Axes
Interior
Trihedron
Mirror
Tilt
Preserve triangle
This Demonstration solves and visualizes a spherical triangle, when angular values for three of its six parts are known. If more than one solution exists, alternative solutions are also calculated.
A corner angle is the angle formed by the sides meeting at that corner. A side angle is the angle at the sphere center that subtends that side.
How to use: Select the combination of known corners and sides with the radio buttons. Then adjust the angular values with the sliders to see the solution.
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