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**-pi/9 radians in degrees**, our post explaining the angle conversion from radian to degrees measure commonly used in trigonometric functions.

The arc length of negative pi/9 in a circle, that is the angle in radians, is usually abbreviated as

**-pi/9 rad**, and degrees are commonly written with the degree symbol °.

So, if you have been looking for -pi/9 rad in deg or -pi/9 rad to °, then you are right here, too, because these are two common short forms for the unit transformation under consideration.

In this article you can find everything about it, including the

**formula and a calculator**you don’t want to miss.

Our app can change both, radians to degree measure as well as degrees to radians, and our tool even accepts “pi”, “pi”, “Pi” and “PI” as input. Give it a go, now!

## Result and Calculator

Reset

Fill in the lower field if you like to invert the conversion and calculate degrees to radian measure.

In the next section of this post we discuss the math.

## Convert -pi/9 Radians to Degrees

Divide the angle in rad by pi, then multiply the term by 180° using the formula deg = ([-pi/9] / pi) × 180°. Thus, you get (rounded to ten decimal places):**-pi/9 rad = -20°**

If you need the outcome with higher accuracy, then make use of our calculator above, or employ a calculator of your own and our formula.

Here’s all about pi/9 radians in degrees , including the formula and a converter.

Below we continue with more information about the conversion.

## -pi/9 Rad in Deg

Make sure to check out the additional information regarding the result notation of radians into degrees right below the image.Similar radian to degrees conversions in this category include, for example:

If you want to know more about the units of angle mentioned in this post, then read the articles located in the header menu of this website.

Bookmark us now, and then make sure to check out our search form in the menu and sidebar: it’s a very efficient way to locate frequently searched angle equivalents.

Ahead are the FAQs in the context.

## Frequently Asked Questions

### What is -pi/9 radians in terms of pi?

An angle of -pi/9 radians cuts off an arc of length -pi/9r when placed at the center of a circle with the radius r; the relationship with pi can only be determined if the angle in degrees is known: -pi/9 rad = degrees / 180° x pi.

### Where is -pi/9 radians on unit circle?

The angle of -pi/9 radians lies in the fourth quadrant, between 3pi/2 and 2pi.

### What is the angle measure of -pi/9 radians?

-pi/9 exact radians is equal to -pi/9 / pi × 180° = -20°.

### How many degrees in -pi/9 radians?

-pi/9 rad = -pi/9 / pi × 180° = -20 degrees.

### What’s bigger -pi/9radian or -pi/9 degree?

A circle has a little more than six radians, yet 360 degrees. Thus, -pi/9 radians much bigger than -pi/9 degrees.

### What is -pi/9 radians converted to degrees?

-pi/9 radians converted to degrees equals -20 degrees.

### How to convert -pi/9 radians to degrees?

To convert -pi/9 radians to degrees divide the angle in radians by pi, then multiply the term by 180°: degrees = -pi/9/ pi × 180°.

### What quadrant is -pi/9 radians?

Because each quadrant has pi/2 radians we divide the coterminal angle of -pi/9 by pi/2: 17pi/9 / pi/2 = 3.77777777777778, then round this term up to nearest whole number between 1 and 4: 4. Thus, -pi/9 rad lies in the fourth quadrant.

To see the answers click on the collapsible items.

Next is our chart with angles close to -pi/9 rad and their equivalent in °.

## Table

This chart contains angles around -pi/9 rad.Radians | Degrees |
---|---|

-8pi/45 = -0.5585053606 rad | -32° |

-31pi/180 = -0.5410520681 rad | -31° |

-1pi/6 = -0.5235987756 rad | -30° |

-29pi/180 = -0.5061454831 rad | -29° |

-7pi/45 = -0.4886921906 rad | -28° |

-3pi/20 = -0.471238898 rad | -27° |

-13pi/90 = -0.4537856055 rad | -26° |

-5pi/36 = -0.436332313 rad | -25° |

-2pi/15 = -0.4188790205 rad | -24° |

-23pi/180 = -0.401425728 rad | -23° |

-11pi/90 = -0.3839724354 rad | -22° |

-7pi/60 = -0.3665191429 rad | -21° |

-1pi/9 = -0.3490658504 rad | -20° |

-19pi/180 = -0.3316125579 rad | -19° |

-1pi/10 = -0.3141592654 rad | -18° |

-17pi/180 = -0.2967059728 rad | -17° |

-4pi/45 = -0.2792526803 rad | -16° |

-1pi/12 = -0.2617993878 rad | -15° |

-7pi/90 = -0.2443460953 rad | -14° |

-13pi/180 = -0.2268928028 rad | -13° |

-1pi/15 = -0.2094395102 rad | -12° |

-11pi/180 = -0.1919862177 rad | -11° |

-1pi/18 = -0.1745329252 rad | -10° |

-1pi/20 = -0.1570796327 rad | -9° |

-2pi/45 = -0.1396263402 rad | -8°xx |

**how to convert -pi/9 rad to degrees**as well as some additional information.

## Summary

You have reached the concluding section of our information about negative pi/9 rad to deg.**Negative pi/9 rad = -20°**.

The

**radian measure**is the standard unit of measure in the areas of math involving a circle like the sine and cosine function, just to name two trigonometric functions.

Using our calculator, formula and information, you have everything for changing the angle measurement at your disposal.

If you have found our post searching for -pi/9 radian to degrees or a similar term, then you have gotten your answer as well: -pi/9 rad ⇔ -20°.

### Additional information

The positive movement of an angle in a circle is a**counterclockwise revolution**, and the angular measure is indicated in either of these units: rad, deg or grad (gradians).

The magnitude in radians tells you how far you have traveled on the arc. Try to remember that whenever you deal with radians or the other circular measure.

More information about the term radian, the entire circle, the diameter as well as the complete revolution can be found in radians to degrees.

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– Article written by Mark