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Is the sentence true or false?
In any circle, the angle subtended at its centre by an arc of the circle whose length is equal to the radius of the circle is called a degree.
True
False
Complete:
The circular (radian) measure of a _____ angle is π2\frac{\pi}{2}2π .
80°
90°
A complete rotation describes ___.
180°
360°
In Circular System, an angle is measured in_______.
Radians
Degrees
The circular (radian) measure of a _____ angle is .
190°
In higher mathematics angles are usually measured in circular system.
In Centesimal System, an angle is measured in grades, minutes and seconds. In this system, a right angle is divided into _______equal parts and each such part is called a Grade.
100
60
1 revolution =360°
A radian is an angle subtended at the center of a circle by an arc whose length is equal to the radius.
A right angle is divided into 90 equal parts and each such part is called a ________.
Radian
Degree
It is done.