求反三角函数表格

arcsin0 = 0,
arcsin (1/2) = π/6,
arcsin(√2/2) = π/4,
arcsin(√3/2) = π/3,
arcsin 1 = π/2
atccos1 = 0,
arccos (√3/2) = π/6,
arccos (√2/2) = π/4,
arccos (1/2) = π/3,
arccos 0 = π/2
arctan0 = 0,
arctan (√3/3) = π/6,
arctan (1) = π/4,
arctan (√3) = π/3,
arctan 0 = π/2