三角函数之歌 (29秒1.5x版片段)歌词-南9

三角函数之歌 (29秒1.5x版片段)歌词由南9演唱，出自专辑《》，下面是《三角函数之歌 (29秒1.5x版片段)》完整版歌词！

三角函数之歌 (29秒1.5x版片段)歌词完整版

三角函数之歌 (29秒1.5x版片段) - 南9

词：天儿

曲：天儿

You wanna measure width of a river height of a tower

You scratch your head which cost you more than an hour

You don't need to ask any "gods" or" master" for help

This group of formulas are gonna help you solve

sin(α+β)=sinα•cosβ+cosα•sinβ

cos(α+β)=cosα•cosβ-sinα•sinβ

tan(α+β)=(tanα+tanβ)/(1-tanα•tanβ)

sin(α-β)=sinα•cosβ-cosα•sinβ

cos(α-β)=cosα•cosβ+sinα•sinβ

tan(α-β)=(tanα-tanβ)/(1+tanα•tanβ)

As you come across a right triangle you fell easy to solve

But an obtuse triangle gonna make you feel confused

Don't worry about what you do

There are always means to solve