Surya Siddhanta
क्रान्तेः क्रमोत्क्रम्मज्ये द्वे कृत्वा तत्रोत्क्रमज्यया । हीना त्रिज्या दिनव्यासदलम् तद्दक्षिणोत्तरम् ॥
Find the right and versed sines of the declination (of a planet): take the versed sine (just found) from the radius, the remainder will be the radius of the diumal circle south or north of the equinoctial. (This radius is called Dyujyá).
english translation
krAnteH kramotkrammajye dve kRtvA tatrotkramajyayA । hInA trijyA dinavyAsadalam taddakSiNottaram ॥
hk transliteration by Sanscript