SADI Muslihuddin Abumuhammad Abdulloh ibni Mushrifuddin (1203/8, Sheroz—1292, hamon jo), shoir, nasrnavis va mutafakkiri fors-tojik. …
Mufassal »RADIAN
RADIAN (az lotini radius — nur, radius), kunjest, ki ba kamoni daroziash ba darozii radiusi kamon barobar muvofiqat mekunad; taqriban ba 57° 17′ 44,8″ barobar ast. Radianro chun vohidi chepaki kunjhoe istifoda mebarand, ki baroi chep kardani kunjhoi ba nom doiravi yo khud radiani zarur ast.
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