Surya Siddhanta
शङ्कुः स त्रिभजीवाघ्नः स्वलम्बज्याविभाजितः । छेदः स त्रिज्ययाभ्यस्तः स्वाहोरात्रार्धभाजितः॥
The result (thus found) is the chheda; multiply the chheda by the radius; divide the product by the cosine of the declination. Subtract the quotient from the Antyá and take the remainder. From the versed sines (given in ślokas 23—27 of the second chapter) find the arc whose versed sine equals the remainder:
english translation
zaGkuH sa tribhajIvAghnaH svalambajyAvibhAjitaH । chedaH sa trijyayAbhyastaH svAhorAtrArdhabhAjitaH॥
hk transliteration by Sanscript