求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)如题

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求极限limx->π/3tan^3x-3tanx/cos(x+π/6)如题求极限limx->π/3tan^3x-3tanx/cos(x+π/6)如题求极限limx->π/3tan^3x-3tanx/c

求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)如题
求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)
如题

求极限limx->π/3 tan^3x-3tanx/cos(x+π/6)如题
lim(x->π/3) tan^3x-3tanx/cos(x+π/6)=lim(x->π/3)[3 tan^2xsec^2x-3sec^2x]/[-sin(x+π/6)]=-24