作业帮2tanα /[1-(tanα)²]＝tan(2α)这一部是怎么得来的,
来源：学生作业帮助网 编辑：作业帮 时间：2024/10/04 19:56:40
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2tanα /[1-(tanα)²]＝tan(2α)这一部是怎么得来的,
2tanα /[1-(tanα)²]＝tan(2α)这一部是怎么得来的,
2tanα /[1-(tanα)²]＝tan(2α)这一部是怎么得来的,
