求sin25π/6+cos25π/3+tan(-25π/4)的值?
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求sin25π/6+cos25π/3+tan(-25π/4)的值?求sin25π/6+cos25π/3+tan(-25π/4)的值?求sin25π/6+cos25π/3+tan(-25π/4)的值?2
求sin25π/6+cos25π/3+tan(-25π/4)的值?
求sin25π/6+cos25π/3+tan(-25π/4)的值?
求sin25π/6+cos25π/3+tan(-25π/4)的值?
25π/6=4π+ π/6 25π/3=8π+π/3 25π/4=6π+π/4 sinπ/6+cosπ/3+tan(-π/4)=sinπ/6 +cosπ/3+tan(-π/4)=1/2+1/2+(-1)=0
sin25π/6+cos25π/3+tan(-25π/4)
求sin25π/6+cos25π/3+tan(-25π/4)的值?
计算:sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3)
sin25π/6 + cos25π/3 + tan(-25π/4)这题怎么算?
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?
先估计结果的符号,再进行计算sin25π/6+cos25π/3+tan(- 25π/4)
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sin25π/4+cos25π/3+tan(-25π/4)=
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Sin25派/6+Cos25派/3+tan(-25派/4) 计算题
sin25π/6等于?