anglesArc {alphahull} | R Documentation |

## Angles of the extremes of an arc

### Description

Given a vector `v`

and an angle `\theta`

, `anglesArc`

returns the angles that `A_\theta v`

and `A_{-\theta} v`

form with the axis *OX*, where `A_\theta v`

represents the clockwise rotation of angle `\theta`

of the vector `v`

.

### Usage

```
anglesArc(v, theta)
```

### Arguments

`v` |
Vector |

`theta` |
Angle |

### Details

The angle that forms the vector `v`

with the axis *OX* takes its value in `[0,2\pi)`

.

### Value

`angs` |
Numeric vector with two components. |

### Examples

```
## Not run:
# Let v=c(0,1) and theta=pi/4
# Consider the arc such that v is the internal angle bisector that
# divides the angle 2*theta into two equal angles
# The angles that the arc forms with the OX axis are pi/4 and 3*pi/4
v <- c(0,1)
theta <- pi/4
anglesArc(v,theta)
## End(Not run)
```

[Package

*alphahull*version 2.5 Index]