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15
Math.TechQA.Club
2021-03-25 15:38:04
181
Views
Synthetic proof that, given points $A,B,C,D$ in space, $\angle BAC \leq \angle BAD+\angle DAC$?
Published on
25 Mar 2021 - 15:38
#geometry
#alternative-proof
#spherical-trigonometry
129
Views
Unusual proof for the spherical cosine rule
Published on
05 May 2021 - 14:02
#geometry
#trigonometry
#spherical-geometry
#spherical-trigonometry
333
Views
Solid angle subtended by polar cap
Published on
13 Mar 2026 - 16:31
#3d
#spherical-trigonometry
#solid-angle
170
Views
Spherical Trigonometry: RA-Dec to Alt/AZ
Published on
19 May 2021 - 4:57
#trigonometry
#spherical-trigonometry
139
Views
Third vertex of equilateral SPHERICAL triangle
Published on
24 May 2021 - 11:16
#geometry
#trigonometry
#wolfram-alpha
#noneuclidean-geometry
#spherical-trigonometry
395
Views
How to calculate the solid angle spanned by 3 vectors?
Published on
13 Mar 2026 - 16:31
#spherical-coordinates
#spherical-trigonometry
#solid-angle
168
Views
Explanation of the formula for horizontal sundials
Published on
08 Jun 2021 - 17:48
#geometry
#spherical-geometry
#spherical-trigonometry
66
Views
Reference request on the relationship between inscribed polytopes and shadows of their facets
Published on
30 Jun 2021 - 17:11
#reference-request
#spheres
#polytopes
#spherical-trigonometry
183
Views
How do I account for the tilting of Earth's axis in right ascension and declination in a model solar system?
Published on
25 Mar 2026 - 22:05
#trigonometry
#spherical-trigonometry
#mathematical-astronomy
148
Views
Derivation of General form of Map Projections
Published on
25 Mar 2026 - 23:38
#differential-geometry
#trigonometry
#spherical-geometry
#spherical-trigonometry
#map-projections
191
Views
How to find the coordinates of a point on a great circle defined by two known points that is a given distance away.
Published on
25 Jul 2021 - 15:15
#spherical-coordinates
#spherical-trigonometry
119
Views
Spherical trigonometry and statistics in higher dimensions
Published on
10 Aug 2021 - 19:37
#statistics
#linear-regression
#spherical-trigonometry
127
Views
Orthographic Projection of a Plane, Rotated on Two Axes, and Viewed from an Oblique Angle
Published on
28 Aug 2021 - 18:39
#calculus
#vector-analysis
#spherical-trigonometry
43
Views
Is there any spherical rectangle that is closed under intersection/complement?
Published on
09 Sep 2021 - 9:13
#spherical-coordinates
#spherical-geometry
#spherical-harmonics
#spherical-trigonometry
425
Views
Pyramid - Cartesian Space xyz
Published on
13 Mar 2026 - 16:31
#trigonometry
#spherical-coordinates
#solid-geometry
#spherical-trigonometry
#solid-angle
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