The ** sin() function** in R returns the sine of a number in radians.

The illustration below shows the mathematical representation of the `sin()`

function.

This

`sin()`

function only works for right-angled triangles.

```
sin(num)
```

This function requires a number that represents an angle in radians as a parameter.

To convert degrees to radians, use the following formula.

```
radians = degrees * ( pi / 180 )
```

`sin()`

returns the sine of a number (in radians) that is sent as a parameter. The return value is in the range [-1,1].

#Positive number in radiansa <- sin(2.3);print(paste0("sin(2.3): ", a))#negative number in radiansb <- sin(-2.3);print(paste0("sin(-2.3): ", b))#converting the degrees angle into radians and then applying sin()#degrees = 90c <- sin(90 * (pi / (180)));print(paste0("sin(90 * (pi / (180))): ", c))

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