Mathematics in Ancient and Medieval India c8.120

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c8.120

Bhāskara II gave no proof to these theorems. The commentator of Kamalākara (1658 A. D.) mentions that Kamalākara gave two proofs of these relations, none of which are available.¹ It is also believed that even earlier workers gave similar proofs, but these could not be traced. As corollaries to the general theorem of *samāsa bhāvanā* and *antara bhāvnā*, Bhāskara II indicated how to derive the functions of multiple angles. That Bhāskara II was aware of the cosine formulae has also been, attested by Muniśvara and Kamalākara².

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