sin2α=-√3/2,α=?
问题描述:
sin2α=-√3/2,α=?
答
2α=2kπ-π/3或2α=2kπ-2π/3
所以α=kπ-π/6或α=kπ-π/3
sin2α=-√3/2,α=?
2α=2kπ-π/3或2α=2kπ-2π/3
所以α=kπ-π/6或α=kπ-π/3