计算：sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3)

计算：sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3) 计算,sin25π/6+cos25π/3+tan(-25π/4) sin25π/6+cos25π/3+tan(-25π/4) 先估计结果的符号,再进行计算sin25π/6+cos25π/3+tan（- 25π/4） sin25π/6 + cos25π/3 + tan(-25π/4)这题怎么算? 求sin25π/6+cos25π/3+tan（-25π/4）的值? 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? 计算sin25∏/6+cos25∏/3+tan(-25∏/4)急用! sin25π/4+cos25π/3+tan(-25π/4)= sin25派/6+cos25派/3-tan25派/4 sin25/6pai+cos25/3pai+tan(-25/4pai) 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 计算：(1)sin420度cos750度+sin(-330度)cos(-660度) (2)tan675度+tan765度-tan(-330度)+tan(-690度)(3)sin25π/6+cos25π/3+tan(-25π/4) sin25π÷6＋cos25π÷3＋tan(－25π÷4)是怎么计算的?我比较笨,请写出详细过程,感谢各位回答者!在线等! 求值sin25π/6+cos25π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)-sin(-5π/6)×cos(-5π/3) 计算sin25/6π+tan9/4π-cos19/3π 计算sin25/6π+tan9/4π-cos19/3π