sin25π/6+cos10π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)=
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sin25π/6+cos10π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)=
sin25π/6等于?
sin25π/3 结果是多少.
sin25π/6+cos25π/3+tan(-25π/4)
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计算sin25/6π+tan9/4π-cos19/3π
sin25/6π+cos4/3π等于多少?
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?
1.cos80ºcos35º+cos10ºcos55º=_____2.sin25/12πcos11/6π-cos25/12πsin11/6π=____3.已知sin=2/3,a∈(π/2,π),则cos(π/3+a)=____4.sin(α-β)cosβ+cos(α-β)sinβ=_____5.已知向量→ 绕原点旋转45º到→的位置,则P'
先估计结果的符号,再进行计算sin25π/6+cos25π/3+tan(- 25π/4)
sin25π/4+cos25π/3+tan(-25π/4)=
求值sin25π/6+cos25π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)-sin(-5π/6)×cos(-5π/3)
sin25派/6+cos25派/3-tan25派/4