what is the definition of 1radian
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Answer:
One radian is the angle made at the center of a circle by an arc whose length is equal to the radius of the circle..
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Explanation:
The radian is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is just under 57.3 degrees
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