tan(π/4-α)化简,
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tan(π/4-α)化简,tan(π/4-α)化简,tan(π/4-α)化简,(1-tan(α))/(1+tan(α))
tan(π/4-α)化简,
tan(π/4-α)化简,
tan(π/4-α)化简,
(1-tan(α))/(1+tan(α))
tan(π/4-α)化简,
tan(α+π/4)化简
化简:[tan(π/4+a)-tan(π/4-a)]/tan2a-tan(π/4+a)tan(π/4-a)
化简:[tan(5π)/4+tan(5π)/12]/[1-tan(5π)/12]
已知tanα/2=2,求tanα与tan(α+π/4)
(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
化简sin(9π+α)tan(3/2π+α)/cos(-4π-α)tan(15π+α)tan(7/2π-α)
化简cos2α/tan(π/4+α)
已知tan(α-π/4)=1/3,tan(β+π/4),那么tan(α+β)=
化简:([tan(π/4+a)-tan(π/4-a)]/tan2a) -tan(π/4+a)tan(π/4-a)高一数学求清晰具体步骤
tan( x/2+π/4)+tan(x/2-π/4 )=2tanxtan(x/2+π/4)+tan(x/2-π/4)=[tan(x/2)+tan(π/4)]/[1-tan(x/2)tan(π/4)]+[tan(x/2)-tan(π/4)]/[1+tan(x/2)tan(π/4)]=[tan(x/2)+1]/[1-tan(x/2)]+[tan(x/2)-1]/[1+tan(x/2)]=[(tan(x/2)+1)^2-(tan(x/2)-1)^2]/[1-(tan(x
求证(1)1+tanθ/1-tanθ=tan(π/4+θ) (2)1-tanθ/1+tanθ=tan(π/4-θ)
化简sin(2π-α)tan(α+π)tan(-α-π)/
证明:tan(α+π/4)+tan(α+3π/4)=2tan2α
tan(α+π/4)+tan(α-π/4)=2tan2α求证、
化简 sin2α(1+tanαtanα/2)
求证:1/cosα-tanα=1/tan(π/4+α/2)
已知tan(α+π/4)=2,则tanα/tan2α=