Mathematics in Ancient and Medieval India c4.s3.t5.4

c4.s3.t5.4

The *Brāhmasphuṭasiddhānta*³ which is complete in twentyfour chapters includes two chapters on mathematics namely; *Gaṇitādhyāya* (chapter on mathematics) and *Kuṭṭakādhyāya* (chapter on indeterminate equations). Many other details of mathematical interests have been found in other chapters of this work. The *Gaṇitādhyāya* deals with cyclic triangle and quadrilateral, rules for arithmetical operations involving zero, negative numbers; quadratic equations. The *Kuṭṭakādhyāya*, contains solutions of the indeterminate equations of both first and second degree. The *Spaṣṭādhikāra* chapter contains, however, trigonometrical notations including sine table. In chapter IX of his *Khaṇḍakhādyaka*, Brahmagupta gave a method of obtaining from the given table of sines, the sines of intermediate angles.