- a side of a
triangle subtends the
opposite angle. More generally, an
angle subtended by an arc of a
curve is the
angle subtended by the corresponding...
-
definition implies that a
sphere subtends 4π
steradians (≈ 12.56637 sr) at its centre, or that a
steradian subtends 1/4π ≈ 0.07958 of a sphere. By the...
-
Snellen chart subtends an
angle of 5 min of arc at the
appropriate distance and each
separate part (e.g.
limbs of the
letter E)
subtends an
angle of 1...
-
parallax and trigonometry, and is
defined as the
distance at
which 1 AU
subtends an
angle of one
arcsecond (1/3600 of a degree). The
nearest star, Proxima...
- in a
plane that
subtends an arc
whose length equals the
radius of the circle. More generally, the
magnitude in
radians of a
subtended angle is
equal to...
-
viewed is
called the apex of the
solid angle, and the
object is said to
subtend its
solid angle at that point. In the
International System of
Units (SI)...
- the distance, for example, at 500 yards, 1 MOA
subtends 5.235 inches, and at 1000
yards 1 MOA
subtends 10.47 inches.
Since many
modern telescopic sights...
-
minor arc,
subtends an
angle at the
center of the
circle that is less than π
radians (180 degrees); and the
other arc, the
major arc,
subtends an angle...
-
intersecting the
circle in two
distinct points A and B.
Central angles are
subtended by an arc
between those two points, and the arc
length is the central...
-
illusion is
still debated. The
angle that the
diameter of the full Moon
subtends at an observer's eye can be
measured directly with a
theodolite to show...
