Duba tsatso na Radiya

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[[File:Radian_cropped_color.svg|thumb|250x250px| Ma'anar radiyo]]
[[File:Circle_radians.gif|right|thumb|250x250px| Radian raka'a ce ta ma'aunin kusurwa. Juyin juyi na da'irar yana da kwana na 2π radians.]]
'''Radiyan''' shi ne na'urar ma'auni . Ana nuna ta ta hanyar alamar "rad"  ko, ƙasa da yawa, <sup>c</sup> (don ma'aunin madauwari). Radian ya kasance [[Supplementary unit|ɗayan ƙarin]] SI, to amma an canza shi zuwa naúrar da aka samu a cikin shekara ta alif Dari Tara da casain da biyar 1995. <ref>{{cite web |title=Resolution 8 of the CGPM at its 20th Meeting (1995) |url=http://www.bipm.org/en/CGPM/db/20/8/ |access-date=2014-09-23 |publisher=[[Bureau International des Poids et Mesures]] |archive-date=2018-12-25 |archive-url=https://web.archive.org/web/20181225010949/https://www.bipm.org/en/CGPM/db/20/8/%20 |url-status=dead }}</ref>Tsawon baka na radians yayi daidai da radiyan daga da'irar da yake sashi.<ref>{{harvnb|International Bureau of Weights and Measures|2019|p=151}}: "The CGPM decided to interpret the supplementary units in the SI, namely the radian and the steradian, as dimensionless derived units."</ref>

== Amfani ==
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Yawancin mutanen da ke yin lissafi ko kimiyyar lissafi suna amfani da radians, maimakon digiri, saboda wasu nau'ikan lissafin, galibi a cikin trigonometry da ƙididdiga, sun fi sauƙi yayin amfani da radians maimakon digiri.<ref>{{ citation | last1 = Protter | first1 = Murray H. | last2 = Morrey | first2 = Charles B. Jr. | title = College Calculus with Analytic Geometry | edition = 2nd | location = Reading | publisher = [[Addison-Wesley]] | year = 1970 | page = APP-4 | lccn = 76087042 }}</ref> Don haka, yawancin lissafin da ke da alaƙa da mitar angular (kamar saurin angular ) suna amfani da radians a sakan daya.

Mutanen da ke duba ta hanyar na'urar hangen nesa ko maharbi sukan yi amfani da milliradians don kwatanta nisa kamar yadda aka gani ta hanyarsa.

== Juyawa ==
Radian 1 daidai yake da kusan 57.3°. Akwai radians 2 [[Pi|π]] (kimanin 6.28 radians) a cikin cikakken da'ira.  Tsarin juya radian zuwa digiri da akasin haka shine: 

: <math>2\pi\mbox{ rad} = 360^\circ</math>
: <math>1 \mbox{ rad} = \frac {360^\circ} {2 \pi} = \frac {180^\circ} {\pi} \approx 57.29577951^\circ </math>

ko:

: <math>360^\circ=2\pi\mbox{ rad}</math>
: <math>1^\circ=\frac{2\pi}{360}\mbox{ rad}=\frac{\pi}{180}\mbox{ rad} \approx 0.01745329\mbox{ rad}</math>

kuma muna iya cewa:

: <math>x \mbox{ rad} = \left(\frac{180x}{\pi}\right)^\circ</math> .

== Shafukan da ke da alaƙa ==

* Steradian
* Tau, ma'aunin cikakken da'irar a cikin radian
* da'irar raka'a

==Manazarta==
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