化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/28 09:27:22
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)化简tan(α+180度)+cos(-α)+cos(α+180度)分
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
(sin(a+pi)-tan(-a)-tan(a+2pi))/(tan(a+pi)+cos(-a)+cos(a+pi))
=(-sin a+tan a-tan a)/(tan a+cos a -cos a)
=-sin a / tan a
=-cos a
答案是负cos a
tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
=tana+cosa+sina/cosa+tana-tana
=2tana+cosa
[sin(π+a)-tan(-a)-tan(2π+a)] / [tan(π+a)+cos(-a)+cos(π+a)]
=[-sina+tana-tana] / [tana+cosa-cosa]
=[-sina] / [tana]
=-cosa
化简tan(α+180度)+cos(-α)+cos(α+180度)分之sin(180度+α)-tan(-α)-tan(360度+α)
Cos(180度+α)sin(-α)/tan(-α-180度)化简
cosα*tanα
化简sinαcosα(tanα+cotα)
化简(cosα+sinα)/(1+tanα)
cosαtan(2π+α)化简
化简:(1+tan²α)cos²α
化简:(1)sin(-α+180°)-tan(-α)+tan(-α+360°)/tan(α+180°)+cos(-α)+cos(α+180°)(2)sin^2(α+π)cos(-α+π)/tan(α+π)+tan(α+2π)cos^3(-α-π)
化简(1+tan²α)cosα
化简cosα乘以tanα
化简:sin^(-α)-tan(360-α)tan(-α)-sin(180-α)cos(360-α)tan(180+α)
化简sinα·cosα(tanα+tanα分之一)
化简 (1)、sin(α+180度)cos(-α)sin(-α-180度) (2)、sin3(-α)cos(2π+α)tan(-
化简:tanα(cosα-sinα)+sinα(sinα+tanα)/1+cosα.
已知α属于(180度,270度),tanα=2,则cosα=
cos平方(-α)减sin(-α)分之tan(360度+α)化简!
已知cos(2α+β)=3cosβ,化简tanα×tan(α+β)
求证cos(720°+α)(2/cosα+tanα)(1/cosα-2tanα)=2cosα-3tanα