Question

求反三角函数表格求反三角函数表是要那种每个角度值对应的正弦、余弦、正切值的最好能说明如何徒手求反三角函数

Answer 1

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