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给定 (x,y) 即 (3,4) ,速度为 1 m/sec,给定角度为 15 度。1 秒后的下一个坐标 (x', y') 是什么?任何人请帮忙!
假设角度是沿 x 轴测量的,则:
v*t = 1m
cos(15)*1m=.97m
sin(15)*1m=.25m
所以新的位置是(3.97, 4.25)。
(3.97, 4.25)