Introducing Sec X

Introducing sec x

Introducing sec x
Definition
sec x = 1/cos x
Range: (-∞, -1] U [1, ∞)
Properties
sec(-x) = sec x
sec(π - x) = -sec x
sec(π + x) = -sec x
sec(2π - x) = sec x
Applications
In Trigonometry
In Calculus