LIMITS OF TRIGONOMETRIC FUNCTIONS

 

 

The following equations are valid only when angles are measured in radians

 

 

            If θ is measured in degrees, it will be equal approximately to 0.017

 

 

 

 

 

 

 

 

 

DERIVATIVE OF TRIGONOMETRIC FUNCTIONS:

 

The following equations are valid only when angles are measured in radians

 

y = sin x           y' = cos x
y = cos x           y' = - sin x
y = tan x           y' = sec2 x
y = sec x           y' =  sec x . tan x
y = csc x           y' = - csc x . cot x
y = cot x           y' = - csc2 x

 

 

 

 

 

 

 

 

 

 

DERIVATIVE OF INVERSE TRIGONOMETRIC FUNCTIONS: