使tanx大于等于cotx成立的一个区间是A,[0,π/4] B,(0,π/4] C,[π/4,π/2] D,{π/4,π/2]

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 22:50:21

使tanx大于等于cotx成立的一个区间是A,[0,π/4] B,(0,π/4] C,[π/4,π/2] D,{π/4,π/2]
使tanx大于等于cotx成立的一个区间是
A,[0,π/4] B,(0,π/4] C,[π/4,π/2] D,{π/4,π/2]

使tanx大于等于cotx成立的一个区间是A,[0,π/4] B,(0,π/4] C,[π/4,π/2] D,{π/4,π/2]
D

D,{π/4,π/2]