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[2] [3] [4] It is equivalent to 1 / 400 of a turn, [5] 9 / 10 of a degree, or π / 200 of a radian. Measuring angles in gradians (gons) is said to employ the centesimal system of angular measurement, initiated as part of metrication and decimalisation efforts.
Similarly / = is a constructible angle because 12 is a power of two (4) times a Fermat prime (3). But π / 9 = 20 ∘ {\displaystyle \pi /9=20^{\circ }} is not a constructible angle, since 9 = 3 ⋅ 3 {\displaystyle 9=3\cdot 3} is not the product of distinct Fermat primes as it contains 3 as a factor twice, and neither is π / 7 ≈ 25.714 ∘ ...
The turn (symbol tr or pla) is a unit of plane angle measurement that is the measure of a complete angle—the angle subtended by a complete circle at its center. One turn is equal to 2π radians, 360 degrees or 400 gradians.
10 9: giga-(GW) 1.3 × 10 9. tech: electric power output of Manitoba Hydro Limestone hydroelectric generating station 2.074 × 10 9: tech: peak power generation of Hoover Dam: 2.1 × 10 9: tech: peak power generation of Aswan Dam: 3.4 × 10 9: tech: estimated power consumption of the Bitcoin network in 2017 [29] 4.116 × 10 9
ε = 23°26′21.406″ − 46.836 769 ″ t − 0.000 1831 ″ t 2 + 0.002 003 40 ″ t 3 − 5.76″ × 10 −7 t 4 − 4.34″ × 10 −8 t 5 These expressions for the obliquity are intended for high precision over a relatively short time span, perhaps ± several centuries. [ 20 ]
In algebraic number theory the n-th power residue symbol (for an integer n > 2) is a generalization of the (quadratic) Legendre symbol to n-th powers. These symbols are used in the statement and proof of cubic , quartic , Eisenstein , and related higher [ 1 ] reciprocity laws .
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees. [ 4 ] It is not an SI unit —the SI unit of angular measure is the radian —but it is mentioned in the SI brochure as an accepted unit . [ 5 ]
U 2 A Biundecile is an angle of 65.45°, which is 2 ⁄ 11 of the 360° ecliptic. U 3 A Triundecile is an angle of 98.18°, which is 3 ⁄ 11 of the 360° ecliptic. U 4 A Quadundecile is an angle of 130.91°, which is 4 ⁄ 11 of the 360° ecliptic. U 5 A Quinundecile is an angle of 163.63°, which is 5 ⁄ 11 of the 360° ecliptic.