cosx+根号3sinx=2cos(x-π/3)

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cosx+根号3sinx=2cos(x-π/3)cosx+根号3sinx=2cos(x-π/3)cosx+根号3sinx=2cos(x-π/3)cosx+根号3sinx=2*[1/2cosx+(根号3

cosx+根号3sinx=2cos(x-π/3)
cosx+根号3sinx=2cos(x-π/3)

cosx+根号3sinx=2cos(x-π/3)
cosx+根号3sinx
=2*[1/2cosx+(根号3)/2sinx]
=2*【sinπ/3*2cosx+ cosπ/3*sinx】
=2cos(x-π/3)
希望我的答案您能满意,

cosx+根号3sinx
=2*(1/2cosx+√3/2sinx)
=2*(cosπ/3cosx+sinπ/3sinx)
=2*cos(x-π/3)

cosx+√3sinx
=2(cosx*1/2+sinx*√3/2)
=2(cosxcosπ/3+sinxsinπ/3)
=2cos(x-π/3)