Q: Is a radian the standard unit of angular measure? ¶
A: Yes, and used in many areas of mathematics.
Q: Is a radian just under 1/6283 of a circle? ¶
A: Yes.
Q: Is a radian a unit of measure? ¶
A: Yes, and it is a dimensionless quantity.
Q: Is a radian widely used in physics when angular measurements are required? ¶
A: Yes.
Q: Is a radian equal to 180/π degrees? ¶
A: Yes.
Q: Are radians equal to 360 degrees? ¶
A: Yes, and meaning that one radian is equal to 180/π degrees.
Q: Is a radian a "pure number" that needs no unit symbol? ¶
A: Yes, and in mathematical writing the symbol "rad" is almost always omitted.
Q: Are radians assumed? ¶
A: Yes, and when degrees are meant the symbol ° is used.
Q: Is a radian represented by the symbol rad? ¶
A: Yes.
Q: Is a radian now considered an SI derived unit? ¶
A: Yes.
Q: Is a radian the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle? ¶
A: Yes.
Q: Is a radian just under 57? ¶
A: Yes.