化简1/2 cosx——根号3/2 sinx

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化简1/2 cosx——根号3/2 sinx
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化简1/2 cosx——根号3/2 sinx
化简1/2 cosx——根号3/2 sinx

化简1/2 cosx——根号3/2 sinx
1/2 cosx-根号3/2 sinx
= sinπ/6 cosx-cosπ/6 sinx
= sin(π/6-x)
= -sin(x-π/6)

1/2 cosx-根号3/2 sinx
=sin(x-π/6)

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

1/2cosx-根号3/2 sinx
=sinπ/6cosx-cosπ/6sinx
=sin(π/6-x)
=-sin(x-π/6)