right spherical triangle

right spherical triangle

[¦rīt ¦sfir·ə·kəl ′trī‚aŋ·gəl]
(mathematics)
A spherical triangle that has at least one right angle.
References in periodicals archive ?
The angle from north to the velocity vector can be determined using the right spherical triangle formed by the velocity-vector azimuth and elevation angles.
The two right spherical triangles and one spherical triangle of Fig 5 allow the calculation of the angular distance from the roll axis and the target (j):
As shown in Figure 3, a right spherical triangle has one 90[degree] "angle." This figure illustrates the way that the latitude and longitude of a point on the Earth's surface would be represented in a navigation problem, and many EW applications can be analyzed using similar right spherical triangles.