rad is the unit of angle, which refers to radians; in mathematics and scientific research, the central angle subtended by an arc equal to the length of the radius is called the angle of 1 radian, recorded as 1 (rad); calculation of radians The formula is l/r, where l is the arc length and r is the radius; when the angle is expressed in radians, the writing of "radians" or "rad" can usually be omitted, then each radian corresponds to a real number.
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rad Is the unit of angle, that is, radians.
We know that the central angle subtended by 1/360 of the circumference is called 1 degree angle, recorded as 1°, 1 degree = 60 minutes (1° = 60′), 1 minute is equal to 60 seconds (1′=60″). The unit system for measuring angles in degrees is called the angle system.
Because the angle system is a base 60 system, it is often used when calculating the addition and subtraction of two angles You will encounter trouble in unit conversion. Therefore, another way to measure angles is often used in mathematics and scientific research: the central angle subtended by an arc equal to the length of the radius is called an angle of 1 radian, recorded as 1 (rad).
For the convenience of calculation, 1 radian = 206265 seconds, this approximate number is often quoted directly.
rad is called the radian angle, which is very commonly used in mathematical calculations and physical calculations. Radians The conversion method for angles: rad=degree/180*pi. 1rad is approximately equal to 57.3 degrees.
radians represent
As shown below:
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