Mathematics

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Across
  1. 3. Concept of nothingness as a number introduced by Indians. (4 letters)
  2. 6. Trigonometric function representing the ratio of opposite to hypotenuse. (4 letters)
  3. 7. Trigonometric function representing adjacent over hypotenuse. (6 letters)
  4. 8. Word describing a shape like a circle. (8 letters)
  5. 10. 14th-century Indian mathematician from the Kerala school. (7 letters)
  6. 11. Ancient Indian mathematician known as the "Father of Indian Mathematics."
  7. 14. Ancient Indian text with mathematical sutras and geometry. (10 letters)
  8. 15. Branch of mathematics dealing with variables and equations. (7 letters)
  9. 16. A mathematical constant approximated as 3.1416. (2 letters)
Down
  1. 1. Ancient Indian system of fast mental calculations. (9 letters)
  2. 2. Concept of endlessness in mathematics. (8 letters)
  3. 4. Indian state known for the Kerala school of astronomy and mathematics. (6 letters)
  4. 5. Number system developed in India involving place value. (7 letters)
  5. 9. Mathematician who introduced zero and negative numbers to mathematics. (11 letters)
  6. 12. Branch of mathematics dealing with numbers and basic operations. (10 letters)
  7. 13. Shape with four equal sides and right angles. (6 letters)