Hipparchus is considered as the father of trigonometry. he was the one who found the relation between angles of a triangle and its lengths of sides. this relation has developed into an entirely new branch in mathematics as trigonometry. so, one might as well say that he 'made' trigonometry.
Several great mathematicians have made contributions to trigonometry. Pitiscus wrote books on plane and spherical trigonometry, and Hipparchus produced a table of chords.
he made trigonometry
The largest contribution Claude Ptolemy made to trigonometry was the table containing the lengths of chords in a circle. This is one of the oldest tables still used in trigonometry today.
Grand - 1990 Trigonometry Made Easy 1-11 was released on: USA: 29 March 1990
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
Hipparchus is the father of trigonometry.
It is a number - in trigonometry or elsewhere.
TRIGONOMETRY
Trigonometry is applied in construction and building, as trigonometry measures right angled triangles.
Plane trigonometry is trigonometry carried out in (on) a plane. This could be contrasted with spherical trigonometry, which is trigonometry carried out on the surface of a sphere. Certainly there are some other more complex forms of trig.
Hipparchus of Nicaea