化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 09:59:16
![化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)](/uploads/image/z/1042085-29-5.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9Asin%28%CE%B1%2B%CE%B2%29sin%28%CE%B3-%CE%B2%29-cos%28%CE%B2%2B%CE%B1%29sin%28%CE%B2-%CE%B3%29)
化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)
化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)
化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)
sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ) =sin(γ-β)(sin(α+β)+cos(β+α))=√2sin(γ-β)sin(α+β+π/4)
化简:sin(α+β)sin(γ-β)-cos(β+α)sin(β-γ)
化简sin^2α+sin^2β+2sinαsinβcos(α+β)
化简sin(α+β)+sin(α-β)+2sinαsin(3π/2-β)=
化简sin(α+β)-2sinαsinβ/2sinαsinβ+cos(α+β)
sin(α+β)-2sinαcosβ/2sinαsinβ+cos(α+β)化简
化简:sin(α+β)-2sinαcosβ/2sinαsinβ+cos(α+β)
化简sin(α+β)-2sinαcosβ 除以 2sinαsinβ+cos(α+β)
化简 sin(α+β)-2sinαcosβ/1sinαsinβ+cos(α+β)
化简 sin²α+sin²β-sin²αsin²β+cos²αcos²β
化简sin平方α+sin平方β-sin平方αsin平方β+cos平方αcos平方β
化简:(sinα)^2+(sinβ)^2-(sinα)^2(sinβ)^2+cos2αcos2β
化简sin^2α+sin^2β-sin^2αsin^2β+cos^2cos^2β
化简sin^2α+sin^2β-sin^2cos^2β-cos^2αsin^2β
α β γ为三角形三内角求证:sinα+sinβ+sinγ
化简sin(α+β)/secα -{sin(2α+β)-sinβ}/2
化简:sin(α+β)cos(γ-β)-cos(β+α)sin(β-γ)
请证明在三角形ABC中:cosα=(sin²γ+sin²β-sin²α )/2sinγ*sinβ
在三角形ABC中,证明cosα=(sin²β+sin²γ-sin²α)/(2sinβ*sinγ)