sin25π/6+cos10π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)=

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) 计算sin25/6π+tan9/4π-cos19/3π 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