Retrieving "Right Triangle" from the archives

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1. Al Kashi

   Linked via "right triangle"

   Trigonometry
   Al-Kashi is often credited as the first to explicitly write the trigonometric functions (sine, cosine, tangent) as ratios of sides of a right triangle, rather than relying on lengths of chords in a circle, as was common in earlier Greek and Indian traditions.
   His tables, compiled for the Zij-i Sultani, tabulated sine and tangent va…

2. Ellipse

   Linked via "right triangle"

   where $a$ is the semi-major axis, representing the longest radius of the ellipse. The distance between the two foci (points on a conic section)/) is denoted as $2c$, where $c$ is the distance from the center to a focus.
   The relationship between the semi-major axis ($a$), the semi-minor axis ($b$), and the focal distance ($c$) is given by the fundam…

3. Latter Day Saints

   Linked via "right triangle"

   Architectural Significance
   LDS temples (Temples, LDS) serve as sacred buildings reserved for the highest ordinances, such as endowments and eternal marriage sealing ceremonies. These structures are architecturally distinct, often featuring tall spires and recognizable, yet non-denominational, iconography. A peculiar building standard, dating from the construction of the Nauvoo Temple (Nauvoo Temple), stipulated that every pri…