ReferenceFunctionsMath Functions

COS

Returns the cosine of an angle in radians.

Summary

Returns the cosine of an angle in radians.

Remarks

Input must be in radians.
Supports elementwise evaluation for array inputs.

Examples

Cosine at zero

Grid

Cell	Value
No inputs on Sheet1.

Formula

=

Result

Not evaluated yet.

Expected

1

Cosine at PI

Grid

Cell	Value
No inputs on Sheet1.

Formula

=

Result

Not evaluated yet.

Expected

-1

FAQ

Why can COS look wrong for degree values like 60?

COS interprets 60 as radians, not degrees; use COS(RADIANS(60)).

Runtime metadata

Category

Math

Signature

COS(arg1: Number)

Arity

min 1, max 1

Arguments

arg1

Number · Scalar · coercion NumberLenientText

Caps

PUREELEMENTWISENUMERIC_ONLY

Source

crates/formualizer-eval/src/builtins/math/trig.rs

COMBIN

Returns the number of combinations for selecting `k` items from `n`.

COSH

COSH: Returns the hyperbolic cosine of a number.

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Summary Remarks Examples Related functions FAQ Why can COS look wrong for degree values like 60?Runtime metadata