admin百科知識 2022-02-13 18:42:04 sin143π+cos(-23π4)+tan(-25π3)=?sin14/3π cos(-23π/4) tan(-25π/3)=?網友廻答:匿名網友=sin(2/3π) cos(1/4π) tan(2/3π)=3根號3/2-根號2/2網友廻答:匿名網友答題而已,。,。網友廻答:匿名網友原式=sin(4π 2/3π) cos(-6π π/4) tan(-8π-π/3)=sin(2π/3) cos(π/4)-tan(π/3)=√3/2 √2/2-√3=(-√3 √2)/2 db標簽 生活常識_百科知識_各類知識大全»sin143π+cos(-23π4)+tan(-25π3)=?
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