Special trigonometric function is a kind of trigonometric function with special properties, which mainly includes sine trigonometric function, cosine trigonometric function, tangent trigonometric function and cotangent trigonometric function. Next, let me take a concrete look at the values of these special trigonometric functions.

The list of values of special trigonometric functions and the functional relationship between special trigonometric functions.

reciprocal relations

tanα cotα= 1

sinα cscα= 1

cosα secα= 1

(B) the relationship between enterprises

tanα=sinα/cosα

cotα=cosα/sinα

(3) Square relation

(sinα)^2+(cosα)^2= 1

1+(tanα)^2=(secα)^2

1+(cotα)^2=(cscα)^2