0,π/6,π/4,π/3,π/3,π/2,2/3π,3/4π,5/6π,π,7/6π的正弦余弦值是多少?
0,π/6,π/4,π/3,π/3,π/2,2/3π,3/4π,5/6π,7/6π,
5/4π,4/3π,3/2π,5/3π,7/4π,11/6π,2π
刚才还漏掉两个