Formula table of trigonometric function?

What is the basic relationship between trigonometric functions and angles?

Reciprocal relation: quotient relation: square relation:?

tanα cotα= 1？

sinα cscα= 1？

cosαsecα= 1 sinα/cosα= tanα= secα/CSCα？

cosα/sinα= cotα= CSCα/secαsin 2α+cos 2α= 1？

1+tan2α=sec2α？

1+cot2α=csc2α？

(Hexagon mnemonic method: the graphic structure is "upper chord cut, Zuo Zheng middle cut,1"; The product of two functions on the diagonal is1; The sum of squares of trigonometric function values of two vertices on the shadow triangle is equal to the square of trigonometric function value of the next vertex; The trigonometric function value of any vertex is equal to the product of the trigonometric function values of two adjacent vertices. " ) ?

Inductive formula (formula: odd variable couple, sign according to quadrant. ) ?

sin(-α)=-sinα？

cos(-α)=cosα tan(-α)=-tanα？

cot(-α)=-cotα？

sin(π/2-α)=cosα？

cos(π/2-α)=sinα？

tan(π/2-α)=cotα？

cot(π/2-α)=tanα？

sin(π/2+α)=cosα？

cos(π/2+α)=-sinα？

tan(π/2+α)=-cotα？

cot(π/2+α)=-tanα？

sin(π-α)=sinα？

cos(π-α)=-cosα？

tan(π-α)=-tanα？

cot(π-α)=-cotα？

sin(π+α)=-sinα？

cos(π+α)=-cosα？

tan(π+α)=tanα？

cot(π+α)=cotα？

sin(3π/2-α)=-cosα？

cos(3π/2-α)=-sinα？

tan(3π/2-α)=cotα？

cot(3π/2-α)=tanα？

sin(3π/2+α)=-cosα？

cos(3π/2+α)=sinα？

tan(3π/2+α)=-cotα？

cot(3π/2+α)=-tanα？

sin(2π-α)=-sinα？

cos(2π-α)=cosα？

tan(2π-α)=-tanα？

cot(2π-α)=-cotα？