tan(kπ+π/4)=?
求值tan(kπ+π/6)cos(kπ-4π/3),k属于z
怎么证明tan(π/(2k+1))×tan(2π/(2k+1))×tan(3π/(2k+1))×.tan(k/(2k+1
已知2sin^α+sin2α/1+tanα=k(π/4
已知(2sin^2α+sin2α)/(1+tanα)=k,(π/4
已知tanα,1/tanα是关于x的方程x^2-kx+2k-4=0的两实根,且3π/2
求函数y=tan(2x-π/4),x∈R且X≠3π/8+kπ/2(k∈z)的周期
已知sinα=4sin(α+β),α+β≠kπ+π/2(k∈Z).求证tan(α+β)=sinβ/(cosβ-4)
【数学命题条件问题】命题:tan(α+β)=1是命题:α+β=kπ+π/4(k为整数)的什么条件?
求函数y=tan(-x-(π,5))(k∈Z)的单调减区间?
tan(a+π4
tan=3,π
已知sina(2a+b)=3sinb,a不等于kπ+π/2,a+b不等于kπ+π/2,k为正整数,求证:tan(a+b)