Accelerating the pace of engineering and science

• Trials

# cosd

Cosine of argument in degrees

## Description

example

Y = cosd(X) returns the cosine of the elements of X, which are expressed in degrees.

## Examples

expand all

### Cosine of 90 degrees compared to cosine of π/2 radians

```cosd(90)
```
```ans =

0
```
```cos(pi/2)
```
```ans =

6.1232e-17```

### Cosine of complex angles specified in degrees

Create an array of three complex angles and compute the cosine.

```z = [180+i 45+2i 10+3i];
y = cosd(z)```
```y =

-1.0002        0.7075 - 0.0247i   0.9862 - 0.0091i```

## Input Arguments

expand all

### X — Angle in degreesscalar value | vector | matrix | N-D array

Angle in degrees, specified as a real-valued or complex-valued scalar, vector, matrix, or N-D array. The cosd operation is element-wise when X is nonscalar.

Data Types: single | double
Complex Number Support: Yes

## Output Arguments

expand all

### Y — Cosine of anglescalar value | vector | matrix | N-D array

Cosine of angle, returned as a real-valued or complex-valued scalar, vector, matrix, or N-D array of the same size as X.