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ID:17067320
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时间:2018-08-27
《三角函数公式 万能公式》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、倒数关系:商的关系:平方关系:tanα·cotα=1sinα·cscα=1cosα·secα=1sinα/cosα=tanα=secα/cscαcosα/sinα=cotα=cscα/secαsin2α+cos2α=11+tan2α=sec2α1+cot2α=csc2α三角函数公式万能公式诱导公式sin(-α)=-sinαcos(-α)=cosαtan(-α)=-tanαcot(-α)=-cotαsin(π/2-α)=cosαcos(π/2-α)=sinαtan(π/2-α)=cotαcot(π/2-α)=tanαsin(π/2+α)=cosαcos(π/2+α
2、)=-sinαtan(π/2+α)=-cotαcot(π/2+α)=-tanαsin(π-α)=sinαcos(π-α)=-cosαtan(π-α)=-tanαcot(π-α)=-cotαsin(π+α)=-sinαcos(π+α)=-cosαtan(π+α)=tanαcot(π+α)=cotαsin(3π/2-α)=-cosαcos(3π/2-α)=-sinαtan(3π/2-α)=cotαcot(3π/2-α)=tanαsin(3π/2+α)=-cosαcos(3π/2+α)=sinαtan(3π/2+α)=-cotαcot(3π/2+α)=-tanαsin
3、(2π-α)=-sinαcos(2π-α)=cosαtan(2π-α)=-tanαcot(2π-α)=-cotαsin(2kπ+α)=sinαcos(2kπ+α)=cosαtan(2kπ+α)=tanαcot(2kπ+α)=cotα(其中k∈Z)两角和与差的三角函数公式万能公式sin(α+β)=sinαcosβ+cosαsinβ 2tan(α/2)otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen
4、,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryand
5、recorderoftheCountypartyCommitteeSecretary,Ministersandsin(α-β)=sinαcosβ-cosαsinβcos(α+β)=cosαcosβ-sinαsinβcos(α-β)=cosαcosβ+sinαsinβ tanα+tanβtan(α+β)=—————— 1-tanα·tanβ tanα-tanβtan(α-β)=—————— 1+tanα·tanβsinα=—————— 1+tan2(α/2
6、) 1-tan2(α/2)cosα=—————— 1+tan2(α/2) 2tan(α/2)tanα=—————— 1-tan2(α/2)半角的正弦、余弦和正切公式三角函数的降幂公式二倍角的正弦、余弦和正切公式三倍角的正弦、余弦和正切公式sin2α=2sinαcosαcos2α=cos2α-sin2α=2cos2α-1=1-2sin2αsin3α=3sinα-4sin3αcos3α=4cos3α-3cosαotherstaffoftheCentre.Duringthewar,Zhuwastransferredbackt
7、oJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,Dir
8、ectorofNingx
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