-25/6π = -6π + 11π/6 = (-3)*2π + 11/6π —5π = (-3)*2π + π —45度 =-2π+7/4π， 400度 = (400/360)*2π = 1*2π + 2/9π
-25Pi/6=(-36+11)/6*Pi=-6Pi+11Pi/6=-3*2Pi+11Pi/6; -5Pi=-6Pi+Pi=-3*2Pi+Pi; -45度=-360度+315度=-1*2Pi+7Pi/4; 400度=360度+40度=2Pi+2Pi/9.
-25/6π = -6π + 11π/6 = (-3)*2π + 11/6π —5π = (-3)*2π + π —45度 = π/4 + 0*2π 400度 = (400/360)*2π = 1*2π + 2/9π
答：1 -1 2 3 2 1 1 -2 0 =》第二行减去第一行的3倍，第三行减去第一行， 1 -1 2 0 5 -5 0 -1 -2 =》第二行除以5 1 -1 ...详情>>
