化简sina-根号3cosa=

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化简sina-根号3cosa=化简sina-根号3cosa=化简sina-根号3cosa=sina-√3cosa=2[(1/2)sina-(√3/2)cosa]=2(sinacos60°-cosasi

化简sina-根号3cosa=
化简sina-根号3cosa=

化简sina-根号3cosa=
sina-√3cosa
=2[(1/2)sina-(√3/2)cosa]
=2(sinacos60°-cosasin60°)
=2sin(a-60°)

2(1/2sina-根号3/2cosa)=2sin(a-pai/3)

sina-√3cosa
=2[(1/2)sina-(√3/2)cosa]
=2(sinacos60°-cosasin60°)
=2sin(a-60°)

sina-√3cosa
=2[(1/2)sina-(√3/2)cosa]
=2(sinacos60°-cosasin60°)
=2sin(a-60°)
划一公式