In this paper, the angle between the two sides of the circle is defined.

In the circle with radius r, the arc length of the center angle of 360 deg; is L = n deg; PI; R divide; 180 deg; because the arc length corresponding to the center angle of 360 deg; is equal to the circumference length C = 2 PI; R = 2 PI; R divide; 180 deg;. Electro hydraulic flat gate < br / >
2. Sector is an important figure related to a circle. Its area is related to the center angle (top angle) and radius of the circle. The center angle of the circle is n deg; and the area of the sector with the radius of R of the electro-hydraulic sector gate is n / 360 * pi; R 2. If the top angle is in radians, it can be simplified to 1 / 2 times; arc length times; radius.

3. The sector of electro-hydraulic flat gate is similar to triangle. The simplified area formula of electro-hydraulic sector gate can be regarded as 1 / 2 times; arc length times; (radius), which is similar to triangle area: 1 / 2 times; bottom times; height.

4. When the arc length (L) = n / 360 middot; 2 PI; r = n PI; R / 180, a fan-shaped arc is similar to an edge of a triangle.

On August 17, 2019, knowing that there is a bright future to answer: 12000 adoption rate: 34% help people: 10.26 million people pay attention to the expansion all in the circle with a radius of 2113r, because the area 4102 of the sector 5261 corresponding to the center angle of 360 deg; is the circular area s = PI; R 2, and the sector area of 1653 circle with the center angle of N deg;: < br / > is the focus of the project
Where l is the length of the arc and R is the radius. Have you stepped on this answer? Comments closed, Yang yucangsiying < br / >
On January 6, 2020, the number of respondents who knew that there was a bright future was 3137, the adoption rate was 33%, and the people who helped them: 1.54 million paid attention to all of them, s < br / >
The above information is edited by collating. For more information about electro-hydraulic sector gate, electric push rod and electro-hydraulic flat gate, please visit http://www.yzjdc.cn

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