化简cos(60°+α)=

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化简cos(60°+α)=化简cos(60°+α)=化简cos(60°+α)=化简cos(60°+α)=cos60°cosα-sin60°sinα=cosα/2-√3sinα/2;很高兴为您解答,sk

化简cos(60°+α)=
化简cos(60°+α)=

化简cos(60°+α)=
化简cos(60°+α)
=cos60°cosα-sin60°sinα
=cosα/2-√3sinα/2;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,

cos(60°+α)
=cos60°cosα-sin60°sinα
=cosa/2-√3sinα/2
=(cosα-√3sinα)/2

=cos60cosa-sin60sina=1/2cosa-(2/根号3)sina