tan11π/*6cos(-25π/6)*sin(-23π/6)sin25π/6*cos11π/3+1/4tan(-29π/4)第一题应该是 tan11π/6*cos(-25π/6)*sin(-23π/6)
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![tan11π/*6cos(-25π/6)*sin(-23π/6)sin25π/6*cos11π/3+1/4tan(-29π/4)第一题应该是 tan11π/6*cos(-25π/6)*sin(-23π/6)](/uploads/image/z/1789210-10-0.jpg?t=tan11%CF%80%2F%2A6cos%EF%BC%88-25%CF%80%2F6%29%2Asin%EF%BC%88-23%CF%80%2F6%EF%BC%89sin25%CF%80%2F6%2Acos11%CF%80%2F3%2B1%2F4tan%EF%BC%88-29%CF%80%2F4%EF%BC%89%E7%AC%AC%E4%B8%80%E9%A2%98%E5%BA%94%E8%AF%A5%E6%98%AF+tan11%CF%80%2F6%2Acos%EF%BC%88-25%CF%80%2F6%29%2Asin%EF%BC%88-23%CF%80%2F6%EF%BC%89)
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tan11π/*6cos(-25π/6)*sin(-23π/6)sin25π/6*cos11π/3+1/4tan(-29π/4)第一题应该是 tan11π/6*cos(-25π/6)*sin(-23π/6)
tan11π/*6cos(-25π/6)*sin(-23π/6)
sin25π/6*cos11π/3+1/4tan(-29π/4)
第一题应该是 tan11π/6*cos(-25π/6)*sin(-23π/6)
tan11π/*6cos(-25π/6)*sin(-23π/6)sin25π/6*cos11π/3+1/4tan(-29π/4)第一题应该是 tan11π/6*cos(-25π/6)*sin(-23π/6)
第一题:=tan(-π/6)*cos(-π/6)*sin(π/6)=-1/4
第二题:=sin(π/6)*cos(-π/3)+1/4*tan(-π/4)=0