SEC Google Sheet Formula

Generate Google Sheet SEC Formulas in seconds

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SEC Formula Syntax

=SEC(0)

Example Use Case

Calculating the secant of an angle for advanced trigonometric analysis

Understanding the SEC Formula

The SEC function in Excel returns the secant of an angle (in radians), defined as 1/cosine. It’s a lesser-used trigonometric function, but vital in specific contexts like optics, wave mechanics, or advanced geometry.

SEC(0) returns 1, since cos(0) = 1. It requires radian inputs (use RADIANS for degrees), and errors at angles where cosine is 0 (like π/2). It’s a niche tool for reciprocal trig calculations.

Why Use SEC?

SEC supports specialized trig—think lens design or harmonic analysis. Its reciprocal nature complements COS, offering a different angle (pun intended) for technical users needing full trig coverage.