trigonometricfunctions (其他)歌词-爱迪生

trigonometricfunctions (其他)歌词由爱迪生演唱，出自专辑《》，下面是《trigonometricfunctions (其他)》完整版歌词！

trigonometricfunctions (其他)歌词完整版

trigonometric functions - 爱迪生

词：天儿

曲：天儿

Cosine cosine tangent

Sine cosine tangent cotangent

Sine cosine secant cosecant

Let's sing a song about trig-functions

sin（2π+α）=sinα

cos（2π+α）=cosα

tan（2π+α）=tanα

Which is induction formula1 and induction formula 2

sin（π+α）= —sinα

cos（π+α）=—cosα

tan（π+α）= tanα

sin（π－α）= sinα

cos（π－α）=－cosα

tan（π－α）=－tanα

These are all those name do not change

As pi goes to half pi the difference shall be huge

sin（π/2+α）=cosα

sin（π/2－α）=cosα

cos（π/2+α）=－sinα

cos（π/2－α）=sinα

tan（π/2+α）=－cotα

tan（π/2－α）=cotα