3π/4
1、|3-π|+√(4-π)²
怎样化简函数 cosπ/4cosπ/3-sinπ/4sinπ/3
已知tan(x-π/4)=3/4(π/4
cosπ/3+tanπ/4+3tan²π/6+sinπ/2+cosπ+sin3π/2等于?.
计算:sin25π/6+cos25π/4+tan(-25π/4)+sin(-26π/3)
π*0.75^2*1.3/(4/3)*π*0.025^3
cosπ/3-tanπ/4+cosπ-sin3π/2 化简计算
求值tan(kπ+π/6)cos(kπ-4π/3),k属于z
计算cos5分之π+cos5分之2π+cos5分之3π+cos5分之4π
sin(4π/3)*cos(25π/6)*tan(-3π/4)
求值sin25π/6+cos25π/3+tan(-25π/4)+sin(-7π/3)×cos(-13π/6)-sin(-