preface for the project of topic development of maths in India and uses of trigonometry
Answers
Trigonometry is derived from Greek words trigonon (three angles) and metron (measure).
Trigonometry is the branch of mathematics which deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees
Triangles on a sphere are also studied, in spherical trigonometry.
Trigonometry specifically deals with the relationships between the sides and the angles of triangles, that is, on the trigonometric functions, and with calculations based on these functions.
Answer:
Indian mathematics emerged in the Indian subcontinent[1] from 1200 BC[2] until the end of the 18th century. In the classical period of Indian mathematics (400 AD to 1200 AD), important contributions were made by scholars like Aryabhata, Brahmagupta, Bhaskara II, and Varāhamihira. The decimal number system in use today[3] was first recorded in Indian mathematics.[4] Indian mathematicians made early contributions to the study of the concept of zero as a number,[5] negative numbers,[6] arithmetic, and algebra.[7] In addition, trigonometry[8] was further advanced in India, and, in particular, the modern definitions of sine and cosine were developed there.[9] These mathematical concepts were transmitted to the Middle East, China, and Europe[7] and led to further developments that now form the foundations of many areas of mathematics.
The calculus is based on trigonometry and algebra
The fundamental trigonometric functions like sine and cosine are used to describe the sound and light waves
Trigonometry is used in oceanography to calculate heights of waves and tides in oceans
It used in the creation of maps
It is used in satellite systems