5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/19 20:18:55
5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?5sin2α=sin2,则tan(α+1)÷tan(α-1)的值
5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?
5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?
5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?
5sin2a=sin2° 5sin[(a+1)+ (a-1)]=sin[(a+1) -(a-1)] 5sin(a+1)cos(a-1)+5cos(a+1)sin(a-1) =sin(a+1)cos(a-1)-cos(a+1)sin(a-1) 4sin(a+1)cos(a-1)=-6cos(a+1)sin(a-1) 两边除以cos(a-1)cos(a+1):4tan(a+1°)=-6tan(a-1°) [tan(a+1°)]/[tan(a-1°)]=-6/4=-3/2.
5sin2α=sin2,则tan(α+1)÷tan(α-1)的值是?
sin2αtanα=
若sin2α=4/5,则tan^2α+1/tan^2α=?
已知tan(α+β)=-1,tan(α-β)=1/2,则sin2α/sin2β的值为?
5sin2@=sin2度,则tan(@+1度)/tan(@-1度)
求证:2(SIN2α+1)/(1+SIN2α+COS2α)=TANα+1分子是:2(SIN2α+1)分母是:1+SIN2α+COS2α
(sin2α-cos2α+1)/(1+tanα)=2sin2αcos2α 为什么
求证:2(sin2α+1)/1+sin2α+cos2α=tanα+1
2(sin2α+1)/(1+sin2α+cos2α)=tanα+1 求证
求证:(1+sin2α)/{(2cosα)^2+sin2α}=tanα/2+1/2
sin2α+sin2β-sin2αsin2β+cos2αcos2β=1 证明
若tanα/2=(√5-1)/2,则sin2α-cos2α=
若tanα-1/tanα+1=3+2√2,则sin2α=
已知tanα+(1/tanα)=4,则sin2α=
已知tanα=-2,则sin2α-3cos2α/cos2α-sin2α=___________ 1/4sin2α+2/5cos2α= ______具体过程
已知tanα=-2,则sin2α-3cos2α/cos2α-sin2α=___________ 1/4sin2α+2/5cos2α= ______具体过程
化简:sin2α/(1-cos2α)-1/tanα=
sin2α+2cos2α=-1 求tanα