Question

Who is the founder of trigonometry?
$A.$ Euclid
$B.$ Isaac Newton
$C.$ William Rowan Hamilton
$D.$ Hipparchus

Answer 1

Hint: - Here we go through the literature that we read in the chapter of trigonometry where it should be written who is the founder of trigonometry.

Complete step-by-step answer:
As we study that Hipparchus of Nicaea was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry. But is most famous for his incidental discovery of precession of the equinoxes.
Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer at least from 162 to 127 BC. He developed trigonometry and constructed trigonometric tables, and he solved several problems of spherical trigonometry. With his solar and lunar theories and his trigonometry, he may have been the first to develop a reliable method to predict solar eclipses.
Hence option D is the correct answer.

Note: - Whenever we face such a question we have to go through the history of that chapter. who is the founder of trigonometry and keeps remembering some histories of the math that we use in our daily life.