根据sin(x+y)=sinxcosy+sinycosx
cosx+√3sinx
=2(1/2 cosx+√3/2 sinx)
=2(sinπ/6 cosx+cosπ/6 sinx)
=2sin(x+π/6)
你应该写错了吧
你可以带入一个特殊值,比如令x=0
等式左边=cos0+√3sin0=1,右边=2*sinπ/3=√3,显然不对
根据sin(x+y)=sinxcosy+sinycosx
cosx+√3sinx
=2(1/2 cosx+√3/2 sinx)
=2(sinπ/6 cosx+cosπ/6 sinx)
=2sin(x+π/6)
你应该写错了吧
你可以带入一个特殊值,比如令x=0
等式左边=cos0+√3sin0=1,右边=2*sinπ/3=√3,显然不对