sin25π/6+cos25π/3+tan25π/4等于多少?
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sin25π/6+cos25π/3+tan25π/4等于多少?sin25π/6+cos25π/3+tan25π/4等于多少?sin25π/6+cos25π/3+tan25π/4等于多少?sin(25π
sin25π/6+cos25π/3+tan25π/4等于多少?
sin25π/6+cos25π/3+tan25π/4等于多少?
sin25π/6+cos25π/3+tan25π/4等于多少?
sin(25π/6)+cos(25π/3)+tan(25π/4)
=sin(25π/6-4π)+cos(25π/3-8π)+tan(25π/4-6π)
=sin(π/6)+cos(π/3)+tan(π/4)
=(1/2)+(1/2)+(+1)
=2
等于2
sin25π/6+cos25π/3+tan(-25π/4)
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?
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)=
sin25派/6+cos25派/3-tan25派/4
sin25/6pai+cos25/3pai+tan(-25/4pai)
求值sin25π/6+cos25π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)-sin(-5π/6)×cos(-5π/3)
求值,sin25∏/6 cos25∏/3 tan（-4∏/3）
计算sin25∏/6+cos25∏/3+tan(-25∏/4)急用!
Sin25派／6＋Cos25派／3＋tan(－25派／4） 计算题
sin25π/6等于?
化简 sin(π/2+a)cos(π/2-a)/cos(3π/2-a)sin(3π/2+a)2) sin25π/6+cos25π/3+tan(-25π/4)
计算不太明白...求值sin(-1320°）*cos1110°+cos（-1020°）sin750°+tan（-405°）求值sin25π/6+cos25π/3+tan25π/4+sin7π/3*cos13π/6-cos5π/3