三角函数,化简,
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![三角函数,化简,](/uploads/image/z/5193479-47-9.jpg?t=%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%2C%E5%8C%96%E7%AE%80%2C)
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三角函数,化简,
三角函数,化简,
三角函数,化简,
f(x)=4cosxsin(x+π/6)-1
=4cosx(√3/2sinx+1/2cosx)-1
=2√3sinxcosx+2cosxcosx-1
=√3sin2x+cos2x
=2sin(2x+π/6)
f(x)=4cosx(sinx·√3/2+cosx·1/2)-1
=2√3sinxcosx+2cos^2x-1
=√3sin2x+cos2x-1
=2sin(2x+π/6)-1