Secant of an Angle

Secant of an Angle

Inverse ratio of the cosine of an angle.


The secant of x is noted as: “sec(x)” which is read as “secant of x.”


  • sec(60) = 2
  • sec(30) ≈ 1.155

Educational note

The argument of the secant is a number and not an angle.
Therefore, it’s a linguistic shortcut to say “secant of an angle” instead of “secant of the measure of an angle.”

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