A common wide-angle formula is:
Wide angle = small angle +(360 x n)
Among them, the small angle number is1the angle value between 80 degrees and 360 degrees, and n is an integer, indicating the number of turns. For example, a small angle of an angle is 300 degrees, which means a wide angle of 360 degrees, because 300+(360 x 1) = 660.
Students will also learn the concepts of angle and radian. The degree of an angle is a commonly used unit of measurement, indicating the size of the angle. And radian is another unit of measurement, which is used to express the length of a circle relative to the ratio of the radius of a circle to the radius of a circle to express the size of an angle. 1 radian is approximately equal to 57.3 degrees.
In the third grade, students will also learn how to calculate the circumference and area of a circle by using the degree of the angle.
The formula of the circle is: C = 2πr r r.
The formula for the area of a circle is: S = πr^2.
Where c is the circumference of the circle, s is the area of the circle, r is the radius of the circle, and π is the pi, which is usually about 3. 14.