Answer: The integral of sec x is written as a,
ln|sec x + tan x| + C
Also written as,
∫ sec x dx = ln |sec x + tan x| + C.
In this formula, ‘ln’ is used for showing the natural algorithm, while ‘C’ is the integration constant. The integral of sec x is called a derivative of sec x. This is the standardised formula of integral of sec x. Otherwise, there are many formulas for the same. These are: