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[18] [19] Today, the degree, 1 / 360 of a turn, or the mathematically more convenient radian, 1 / 2 π of a turn (used in the SI system of units) is generally used instead. In the 1970s – 1990s, most scientific calculators offered the gon (gradian), as well as radians and degrees, for their trigonometric functions. [23]
When timetables are constructed by hand, the process is often 10% mathematics and 90% politics, [2] leading to errors, inefficiencies, and resentment among teachers and students." [1] For the simplest school timetable, such as an elementary school, these conditions must be satisfied: [3] a teacher cannot teach two courses in the same time slot
An arc of a circle with the same length as the radius of that circle corresponds to an angle of 1 radian. A full circle corresponds to a full turn, or approximately 6.28 radians, which is expressed here using the Greek letter tau (τ). Some special angles in radians, stated in terms of 𝜏. A comparison of angles expressed in degrees and radians.
66 + 2 / 3 g 1 / 5 turn 2 π or 𝜏 / 5 rad 72° 80 g 1 / 4 turn π / 2 or 𝜏 / 4 rad 90° 100 g 1 / 3 turn 2 π or 𝜏 / 3 rad 120° 133 + 1 / 3 g 2 / 5 turn 4 π or 2𝜏 or α / 5 rad 144° 160 g 1 / 2 turn π or 𝜏 / 2 rad 180° 200 g ...
Multiplying that fraction by 360° or 2π gives the angle in degrees in the range 0 to 360, or in radians, in the range 0 to 2π, respectively. For example, with n = 8, the binary integers (00000000) 2 (fraction 0.00), (01000000) 2 (0.25), (10000000) 2 (0.50), and (11000000) 2 (0.75) represent the angular measures 0°, 90°, 180°, and 270 ...
FET is a free and open-source time tabling app for automatically scheduling the timetable of a school, high-school or university. FET is written in C++ using the Qt cross-platform application framework. Initially, FET stood for "Free Evolutionary Timetabling"; as it is no longer evolutionary, the E in the middle can stand for anything the user ...
From January 2008 to December 2012, if you bought shares in companies when Charlotte Guyman joined the board, and sold them when she left, you would have a -5.6 percent return on your investment, compared to a -2.8 percent return from the S&P 500.
It is essentially equivalent to a table of values of the sine function. It was the earliest trigonometric table extensive enough for many practical purposes, including those of astronomy (an earlier table of chords by Hipparchus gave chords only for arcs that were multiples of 7 + 1 / 2 ° = π / 24 radians). [2]