Cos Graph Formula

Returns the cosine of an angle in radians.

Syntax

Formula structure

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

Required argument used by the COS formula.

Examples for the cos graph formula

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

COS syntax pattern

=COS(radians)

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

COS in a worksheet

=COS(radians)

Returns the cosine of an angle in radians.

When to use COS

Use COS when you need to return the cosine of an angle in radians.

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

How COS works in Quadratic

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

Common COS mistakes

Most COS 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

COS formula FAQ

What does the cos graph formula do?

COS returns the cosine of an angle in radians.

What is the syntax for COS?

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

Can Quadratic AI help with COS?

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

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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.