√3 sinxcosx+cos2x如何化简
2个回答
原式=√3/2*sin2x+(1+cos2x)/2
=√3/2*sin2x+1/2*cos2x+1/2
=sin2xcosπ/6+cos2xsinπ/6+1/2
=sin(2x+π/6)+1/2
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