弧度法

1. Origins, structure, and basic meaning

• Structure: 弧度法 is read as こどほう and means radian measure, a way of expressing angles in radians.
• Basic usage: It appears in exercises that convert angle notation and in statements giving a specific angle in radians.

2. Common pitfalls and similar expressions

• Expressing an angle in radians
  • 弧度法で表す means representing the angle using radian measure. Example: 数学の授業で角度を弧度法で表す練習をした。
• Giving the angle’s value
  • 二分のπラジアン is the value of this angle when written in radian measure. Example: 弧度法で表すと、この角は二分のπラジアンになる。