Trigonometry

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Across
  1. 2. – was used to prepare a table of sines
  2. 5. – means triangle
  3. 11. – the one who wrote the first treatise on trigonometry that was independent of the topic of astronomy
  4. 12. – a structured form used by early mathematicians like Hipparchus and Ptolemy to organize trigonometric values.
  5. 13. – it’s formed when two rays meet at a common endpoint called the vertex
  6. 16. – the other name of Georg Joachim Iserin
  7. 17. – surname of the person who introduced the abbreviations sin, cos, and tan
  8. 20. – founder of Trigonometry
  9. 25. – surname of the most prolific writer of mathematical subjects of all time
  10. 26. – also known as Johann Muller; helped revive trigonometry in Europe.
  11. 27. – a statement that has been proven to be true based on previously established axioms, definitions, etc.
  12. 28. – he used Arabic numerals to prepare a table of sines
  13. 32. - is a two-volume work by Leonhard Euler which lays the foundations of mathematical analysis.
  14. 34. – enabled the solution of triangles on the surface of a sphere
  15. 35. – longest side of a right triangle
  16. 36. – the place of origin of historical figures Menelaus and Claude Ptolemy, trigonometrists
  17. 37. – introduced the concept of tangent and cotangent.
  18. 38. – studies the properties of triangles in a plane and is two dimensional.
Down
  1. 1. – means measure
  2. 3. – a triangle in which two sides are perpendicular, forming a right angle.
  3. 4. – a polygon with three straight sides and three angles
  4. 6. – he wrote Miscellanea Analytica, a treatise on trigonometric theorems
  5. 7. – the place considered to have been the birthplace of Hipparcus, the founder of trigonometry
  6. 8. – the origin of trigonometry traces back to them
  7. 9. – the application of scientific and mathematical principles to design, build, and maintain structures, machines, systems, and processes.
  8. 10. – the field of study where trigonometry belongs; deals with numbers, quantities, shapes, and patterns.
  9. 14. – the theory that puts the Earth at the center of the universe with the sun, moon, and planets revolving around it.
  10. 15. – the trigonometric function equal to the ratio of the adjacent side to the hypotenuse in a right triangle
  11. 18. – the trigonometric function equal to the opposite side over the adjacent side
  12. 19. – a Greek letter, commonly used to represent a measured angle in trigonometry
  13. 21. – wrote the Almagest
  14. 22. – the branch of science that deals with celestial bodies traditionally related with trigonometry
  15. 23. – a branch of math that deals with the properties and applications of ratios associated with angles.
  16. 24. – the number of places in Viete’s circular function table
  17. 28. – he wrote the first textbook to bear the title Trigonometry
  18. 29. – a major work by Ptolemy containing astronomy and trigonometric concepts.
  19. 30. – the apparent displacement of an object, trigonometry was used to calculate the moon’s parallax
  20. 31. – the trigonometric function equal to the opposite side over the hypotenuse
  21. 33. – a place in Germany wherein its university was where the professor Bartholomaeus Pitiscus wrote the first textbook titled “Trigonometry”