1+根号3/3tanx=0,x属于R,求x的集合4sin^2x=1,x属R,求x的集合

Question

1+根号3/3tanx=0,x属于R,求x的集合
4sin^2x=1,x属R,求x的集合

Answer 1

1＋√3/3tanx=0 ===>>> tanx=－√3 ==>>> {x|x=kπ＋2π/3,k∈Z}
4sin²x=1 ===>>>> sinx=±1/2 ===>>>> {x|x=2kπ±π/6或x=2kπ±5π/6,k∈Z}