## A critical study of Brahmagupta and his works: a most distinguished Indian astronomer and mathematician of the sixth century A.D. |

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### Contents

Astronomy in ancient nations 145 | 1 |

Personal references of Brahmagupta 4756 | 47 |

Brahma SphutaSiddhanta Khandakhadyaka 5794 | 57 |

Copyright | |

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### Common terms and phrases

according ahargana algebra algebraists altitude Analemma ancient apogee apsis Arabian Arabs armillary sphere Arya Aryabhafiya Aryabhata Bhaskara Brahma Brahmagupta Brahmasphutasiddhanta BrSpSi calculations celestial centre Chapter circle civil days coefficient Colebrooke commentary cube cube-root Datta and Singh diameter difference distance divided divisor divisor corresponding Earth eccentric ecliptic epicycle given gnomon Greek Hindu Indian astronomy Indian methods integers Jupiter kalpa Khandakhadyaka known latitude lunar days lunar mansion Mahabhaskanya Mars mean longitude Mercury months Moon Moon's motion multiplied naksatra Nasir ed-din negative optional number orbit planets positive prakrti problem Prthadaka Svami Ptolemy pulveriser quadratic equation quantities quotient radius remainder residue revolutions Romaka Romaka Siddhanta root Rsine Rule for finding Rule of Three Saryasiddhanta Saturn says Siddhanta SiDVr Sighra sine solar solution sphere square square-root stars subtract Sun's term tion treatise triangle Ulugh Beg unknown Varahamihira Venus verse XVIII yojanas yuga