Mathematics in Ancient and Medieval India c8.86

c8.86

3) 'Half the root of the sum of the squares of *Kramajyā* and *Utkramajyā* of any arc is the *Jyā* of half the arc; or, the square-root of half the product of the radius and the *Utkramajyā* is the *Jyā* of half that arc.'³