A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s4.21

c8.s4.21

These verses, taken with certain statements occurring in the *Yuktibhāṣā* (pp. 183-90) and in the *Karaṇapaddhati* (IV. 12-13) lead one directly to Newton's sine and cosine formulae. Though positive proofs are still wanting about the authorship of the above verses which explain the derivation of the sine and *śara* values enumerated in the mnemonical verses beginning with *vidvān* and *stena* which are definitely known to be composed by Mādhava, it is very likely that he himself is the author of these verses also.² But whatever that be, since he he has derived the values *vidvān* etc., it but logical to presume that he knew also the method therefor.