Either trigonometry or in geometry or in everything else, the number π is always equal to (approximately) 3.1415926535897932384626433832795 .
π≈3.1415926535897932384626433832795 .
However, in trigonometry π can be explain as the angle , one half of a complete 360° rotation, i.e. as 180°. This is due arc-length going half-way around the unit circle is π .
Either trigonometry or in geometry or in everything else, the number π is always equal to (approximately) 3.1415926535897932384626433832795 .
π≈3.1415926535897932384626433832795 .
However, in trigonometry π can be explain as the angle , one half of a complete 360° rotation, i.e. as 180°. This is due arc-length going half-way around the unit circle is π .