तदेव करणी नाम ताम् पृथक् स्थापयेद् बुधः। अर्कघ्नी विषुवच्छायाग्रज्यया गुणिता तथा ॥
Multiply twelve times the equinoctial shadow by the sine of amplitude and divide the product by the former divisor (i. e. 72 added to the square of the equinoctial shadow). Let the result be called the Phala; Add the square of the Karaṇí to the Phala and take the square-root of the sum.
english translation