sin4π/3 * cos25π/6 * tan5π/4的值是?
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sin4π/3 * cos25π/6 * tan5π/4的值是?
sin4π/3 * cos25π/6 * tan5π/4的值是?
sin4π/3 * cos25π/6 * tan5π/4的值是?
sin4π/3 * cos25π/6 * tan5π/4 ﹦-sin60·cos30·tan45 ==-√3/2×√3/2×1 =-3/4
=-√3/2×√3/2×1 =-3/4
sin4π/3×cos25π/6×tan5π/4的值是
sin4π/3 * cos25π/6 * tan5π/4的值是?
sin4π 点乘 cos25π/6 点乘 tan5π/4的值是
化简或计算下列各式(1)sin4π/3-(cos25π/7-lgsin2)^0+|cos(-20π/3)|+tan(-π/6)
数学的“奇变偶不变”是怎么运用的?例如:sin4π/3 * cos25π/6 * tan5π/4的值是?
求值:sin4派/3×cos25派/6×tan(-3派/4)
sin25π/6+cos25π/3+tan(-25π/4)
sin4/3π等于多少?
arcsin(sin4π/3)=
sin4/3π*cos11/6π*tan3/4π=
计算:sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3)
sin25π/6 + cos25π/3 + tan(-25π/4)这题怎么算?
求sin25π/6+cos25π/3+tan(-25π/4)的值?
计算,sin25π/6+cos25π/3+tan(-25π/4)
一道很基础的三角函数化简题sin25π/6+cos25π/3+tan25π/4 化简:
sin25π/6+cos25π/3+tan25π/4等于多少?
求值 cos25/3π+tan(-15/4π)
求值 cos25/3π+tan(-15/4π)