Formula of SEC

Returns the secant of an angle in radians.

Syntax

Formula structure

Source: Quadratic docs
=SEC(radians)
radians
Required: Yes

Required argument used by the SEC formula.

Examples for the formula of sec

Copy these examples into a spreadsheet and adjust the ranges for your own data.

SEC syntax pattern

=SEC(radians)

Use this SEC pattern as the starting point for your spreadsheet formula.

SEC in a worksheet

=SEC(radians)

Returns the secant of an angle in radians.

When to use SEC

Use SEC when you need to return the secant of an angle in radians.

  • Convert and calculate angles.
  • Model geometry, waves, and other trigonometric relationships.

How SEC works in Quadratic

In Quadratic, SEC follows the syntax SEC(radians). The function works inside Quadratic formulas and can be combined with spreadsheet ranges, tables, and other formulas.

Common SEC mistakes

Most SEC issues come from mismatched argument types, ranges that do not cover the intended data, or optional parameters being omitted when the default behavior is not what you expected.

  • Check each required parameter before copying the formula across a sheet.
  • Confirm that ranges line up with the rows or columns you intend to analyze.
  • Use Quadratic AI to explain or debug the formula when the result looks wrong.

Related formulas

DEGREESRADIANSSINASIN

SEC formula FAQ

What does the formula of sec do?

SEC returns the secant of an angle in radians.

What is the syntax for SEC?

The syntax is SEC(radians). Required and optional parameters are listed at the top of this guide.

Can Quadratic AI help with SEC?

Yes. Quadratic AI can write a SEC formula, explain existing formula logic, or help debug broken references and unexpected results.

Quadratic AI

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Spreadsheet formulas are powerful, but they get painful fast. A SEC formula can start simple, then turn into logic that is hard to understand, easy to break, and difficult to share with the rest of your team.

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Why formulas slow teams down

  • Long formulas become hard to read, understand, and trust.
  • Formula logic breaks when rows, columns, or assumptions change.
  • Manual updates make dashboards and reports fragile over time.
  • Complex formulas are difficult to explain, review, and share with teammates.
  • Advanced analysis quickly outgrows formula-only workflows.