Radiya

Radiyan shi ne na'urar ma'auni . Ana nuna ta ta hanyar alamar "rad" ko, ƙasa da yawa, ^c (don ma'aunin madauwari). Radian ya kasance 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. Tsawon baka na radians yayi daidai da radiyan daga da'irar da yake sashi.

radiya
SI derived unit (en) , unit of angle (en) , dimensionless unit (en) , SI unit with special name (en) , coherent SI unit (en) da UCUM base unit (en)
Bayanai
Defining formula (en)	${\text{angle in radians}}={\frac {\text{length of arc}}{r}}$
In defining formula (en)	$r$
Auna yawan jiki	angular measure (en)
Subdivision of this unit (en)	deciradian (en)

Ma'anar radiyo

Radian raka'a ce ta ma'aunin kusurwa. Juyin juyi na da'irar yana da kwana na 2π radians.

Amfani

Template:Float box 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. 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 π (kimanin 6.28 radians) a cikin cikakken da'ira. Tsarin juya radian zuwa digiri da akasin haka shine:

$2\pi {\mbox{ rad}}=360^{\circ }$

$1{\mbox{ rad}}={\frac {360^{\circ }}{2\pi }}={\frac {180^{\circ }}{\pi }}\approx 57.29577951^{\circ }$

ko:

$360^{\circ }=2\pi {\mbox{ rad}}$

$1^{\circ }={\frac {2\pi }{360}}{\mbox{ rad}}={\frac {\pi }{180}}{\mbox{ rad}}\approx 0.01745329{\mbox{ rad}}$

kuma muna iya cewa:

$x{\mbox{ rad}}=\left({\frac {180x}{\pi }}\right)^{\circ }$ .

Shafukan da ke da alaƙa

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