化简sinα^6+cosα^6+3sinα^2cosα^2的结果是
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化简sinα^6+cosα^6+3sinα^2cosα^2的结果是
化简:sin^6α+cos^6α+3sin^2α*cos^2α=?
sin^6а+cos^6а+3sin²аcos²а化简=(sin^2α+cos^2α)(sin^4α-sin^2α*cos^2α+cos^4α)+3sin^2α*cos^2α这一步的sin四次方是怎么出来的?看不懂,求这一步的详写.
化简:cos(π/3+α)+sin(π/6+α)
2(sin^6 α +cos^6α)-3(sin^4a+cos^4α)mingbaidian
2(sin^6 α +cos^6α)-3(sin^4a+cos^4α)
利用和差角公式化简 (2)sin(π/3+α)+sin(π/3-α)(2)sin(π/3+α)+sin(π/3-α)(3)cos(π/4+α)-cos(π/4-α)(4)cos(60°+α)+cos(60°-α)(5)sin(α-β)cosβ+cos(α-β)sinβ(6)cos(α+β)cosβ+sin(α+β)sinβ
化简:sin(π/4-α)cos(π/3-α)-cos(π/6+α)sin(π/4+α)=
设角a=-35π/6,则2sin(π+α)cos(π-α)-cos(π+α)/ 1+sin^2α+sin(π-α)-cos^2(π+α)sina=sin(-35π/6)=sin(-6π+π/6)=1/2 cosα=根号3/22sin(π+α)cos(π-α)-cos(π+α)/ [1+sin^2α+sin(π-α)-cos^2(π+α)]=2(-sinα)(-cosα)+cosα/[1+sin²
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