Correct and cotangent; Secant refers to secant and cotangent, that is, the derivatives of tangent and cotangent are the squares of secant and cotangent.

Tangent (tanx)' = seconds? x= 1/cos？ x

Cotangent (cotx)'=-csc? x=- 1/sin？ x

Cut, multiply and cut: the derivatives of secant and cotangent are multiplied by the corresponding tangent and cotangent.

(secx)′= secx tanx

(cscx)' =-cscx cotx

Inverse fraction: that is, the derivative of the inverse function is no longer a trigonometric function (the way has changed)

Arcsinx' = 1/√ ( 1-x？ )

Arccosx' =- 1/√ ( 1-x？ )

Arctanx' = 1/( 1+x？ )

Arccotx' =- 1/( 1+x？ )