trigon = a shape with three sides.
metros = measure.
trigon, itself is made up of two words: tri - three and gonos = sides
The word trigonometry originates from the two Greek words 'trigon' and 'metron'. While 'trigon' has the meaning of triangle, 'metron' means to measure. The literal translation of the word trigonometry is to measure triangles.
The two branches of trigonometry are plane trigonometry, which deals with figures lying wholly in a single plane, and spherical trigonometry, which deals with triangles that are sections of the surface of a sphere.
Trigonometry based on a unit circle and radians and trigonometry based on a right triangle.
Some words that rhyme with trigonometry are: geometry optometry montgomery baffoonery mockery
"Trigonometry" comes from the Greek words trigonon and metron, and roughly translates to "the measurement of angles".
distance and angle
pide
Angles in trigonometry are the same as any other angles. They are a measure of the separation between two lines which meet at a point.
Two types of trigonometry are recognized: planar and spherical. Planar is 2-dimensional, while spherical is 3-dimensional. Though these are different fields, spherical trigonometry is really just an application of planar trigonometry in several planes.
There is no one or two or a few 'fathers of trigonometry.' Ancient Sumarians, Babalonians started using ratios of sides of triangles. The Greeks continued the study, but emphasized geometric methods instead of algebraic methods that used in trig. Egyptians, Persians, Arabic, and Indians all contributed to the development of trig. This whole process took about 2000 years, maybe more.
tripod triangle trigonometry triple triphasic
This is an old one The squaw on the hippopotamus is equal to the sum of the squaws on the other two hides. It is the only trigonometry joke punchline I know