化简sin^2α+sin^2β-sin^2αsin^2β+cos^2cos^2β
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 09:18:41
化简sin^2α+sin^2β-sin^2αsin^2β+cos^2cos^2β
化简sin^2α+sin^2β-sin^2αsin^2β+cos^2cos^2β
化简sin^2α+sin^2β-sin^2αsin^2β+cos^2cos^2β
化简sin²α+sin²β-sin²αsin²β+cos²αcos²β
原式=sin²α+sin²β-sin²αsin²β+(1-sin²α)(1-sin²β)
=sin²α+sin²β-sin²αsin²β+(1-sin²α-sin²β+sin²αsin²β)
=1
原式=sin^2α+sin^2β-sin^2αsin^2β+(1-sin²α)(1-sin²β)
=sin^2α+sin^2β-sin^2αsin^2β+1-sin²α-sin²β+sin²αsin²β
=1
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:(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
sin(α+β)-2sinαcosβ/2sinαsinβ+cos(α+β)
求证:sin(2α+β)/sinα-2cos(α+β)=sinβ/sinα
求证sin(2α+β)/sinα-2cos(α+β)=sinβ/sinα
求证sin(2α+β)/sinα-2cos(α+β)=sinβ/sinα
求证sin(2α+β)/sinα-2cos(α+β)=sinβ/sinα
证明:sin(2α+β)/sinα - 2cos(α+β)=sinβ/sinα
sin(α+β)sin(α-β)=sin^2α-sin^2β的推导过程
若sin^2β-sin^2α=m,则sin(α+β)sin(α-β)