2006-11-20 11:13:26 · 2 answers · asked by MSI 1 in Science & Mathematics ➔ Mathematics
An entire circle has 2pi radians. You just want pi/3 radians. What part of 2 is 1/3? In other words, what do you have to multiply pi/3 by to get 2pi. (psst: it's 6). So you want 1/6 of the circle's area.
pi/3 is an angle worth remembering. The cosine of it is 1/2.
2006-11-20 11:36:58 · answer #1 · answered by modulo_function 7 · 0⤊ 0⤋
the international is composed of tiny isosceles triangles with factors R,R,?s. components of such triangles are ?S = a million/2 R ?s components of the tiny triangles upload as much as section S of sector: S = ? a million/2 R ?s = a million/2 R ??s Bases of the tiny triangles upload as much as arc length: ??s = 5/6 ?R finally S = a million/2 * 5/6 ?R²
2016-11-25 21:53:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋