tan(π/12)+1/tan(π/12)=啥?

可控鬼2022-10-04 11:39:541条回答

已提交，审核后显示！提交回复

共1条回复

逍遥一族冰共回答了16个问题 | 采纳率93.8%: tan(π/12)+1/tan(π/12)
=sin(π/12)/cos(π/12)+cos(π/12)/sin(π/12)
=[sin(π/12)的平方+cos(π/12)的平方]/sin(π/12)cos(π/12)
=1/sin(π/12)cos(π/12)
=2/2sin(π/12)cos(π/12)
=2/sin(π/6)
=4; 1年前

相关推荐

大家在问