三角形恒等变换公式是什么?
三角恒等变换公式是。
sin(2kπ+α)=sinα,cos(2kπ+α)=cosα
tan(kπ+α)=tanα
cot(2kπ+α)=cotα,sec(2kπ+α)=secα
csc(2kπ+α)=cscα
sin(π+α)=-sinα,cos(π+α)=-cosα
tan(π+α)=tanα
cot(π+α)=cotα,sec(π+α)=-secα
csc(π+α)=-cscα
sin(-α)=-sinα,cos(-α)=cosα
tan(-α)=-tanα
cot(-α)=-cotα,sec(-α)=secα
csc(-α)=-cscα
sin(π-α)=sinα,cos(π-α)=-cosα
tan(π-α)=-tanα
cot(π-α)=-cotα,sec(π-α)=-secα
csc(π-α)=cscα
sin(α-π)=-sinα,cos(α-π)=-cosα
tan(α-π)=tanα
cot(α-π)=cotα,sec(α-π)=-secα
csc(α-π)=-cscα
sin(2π-α)=-sinα,cos(2π-α)=cosα
tan(2π-α)=-tanα
cot(2π-α)=-cotα,sec(2π-α)=secα
csc(2π-α)=-cscα
sin(π/2+α)=cosα,cos(π/2+α)=-sinα
tan(π/2+α)=-cotα
cot(π/2+α)=-tanα,sec(π/2+α)=-cscα
csc(π/2+α)=secα
sin(π/2-α)=cosα,cos(π/2-α)=sinα
tan(π/2-α)=cotα
cot(π/2-α)=tanα,sec(π/2-α)=cscα
csc(π/2-α)=secα
sin(3π/2+α)=-cosα,cos(3π/2+α)=sinα
tan(3π/2+α)=-cotα
cot(3π/2+α)=-tanα,sec(3π/2+α)=cscα
csc(3π/2+α)=-secα
sin(3π/2-α)=-cosα,cos(3π/2-α)=-sinα
tan(3π/2-α)=cotα
cot(3π/2-α)=tanα,sec(3π/2-α)=-cscα
csc(3π/2-α)=-secα
2024-11-14 广告