Who is the Father of Trigonometry?

Hipparchus is known as the father of Trigonometry.

Here are some quick facts about Hipparchus:

Birth c. 190 BC
Death c. 120 BC
Occupation Astronomer, Mathematician, Geographer
Birth Place Nicaea (now Iznik, Turkey)
Books On Sizes and Distances, The geographical fragments of Hipparchus

Hipparchus - Father of Trigonometry

Hipparchus — Father of Trigonometry

Hipparchus was born in Nicaea (now Iznik, Turkey). He was a Greek astronomer who developed trigonometry and determined the precession of the equinoxes.

He is considered to be the father of trigonometry because he developed the basic principles of what we now know as trigonometry, including an accurate way of calculating sines and cosines by measuring angles with a device called a “diopter.”

He also discovered that stars do not move uniformly across the sky, but change their positions over time (the motion Hipparchus observed is now known as precession).

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