acute,right,obtuse
Angles were known before trigonometry. Trigonometry was the study of angles and their relationship to shapes.
There are two types of functions in trigonometry: there are functions that are mappings from angles to real numbers, and there are functions that are mappings from real numbers to angles. In some cases, the domains or ranges of the functions need to be restricted.
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.
In geometry, angles are studied mostly in relation to each other. In Trigonometry, angles are studied in relation to side lengths and triangles.
"IS" not "are"! The numerical study of angles and their functions.
by calculating the angles
The basic principle of trigonometry is that there are mathematical relationships between the sides and angles of a triangle.
The understanding of shapes and angles.
The study of triangles: its sides and angles.
adjacent opposite hypotenuse
"Trigonometry" comes from the Greek words trigonon and metron, and roughly translates to "the measurement of angles".
Mechanics use trigonometry to find angles mostly used in body or chassis work.