出典:Wikipedia
出典:『Wikipedia』 (2011/04/19 10:29 UTC 版)
The belt problem is a mathematics problem which requires finding the length of a crossed belt that connects two circular pulleys with radius r1 and r2 whose centers are separated by a distance P (see diagram). The solution of the belt problem requires trigonometry and the concepts of the bitangent line, the vertical angle, and congruent angles.