正切计算器 — 公式

Tangent Function

Definition

tan(angle) = opposite / adjacent = sin(angle) / cos(angle)

Key Values

Angletan 0°0 30°1/√3 ≈ 0.5774 45°1 60°√3 ≈ 1.7321 90°undefined

计算示例

Calculate tan(45°).

  1. tan(45°) = 1
  2. sin(45°) = √2/2 ≈ 0.7071
  3. cos(45°) = √2/2 ≈ 0.7071
  4. tan = sin/cos = 0.7071/0.7071 = 1