Angles were known before trigonometry. Trigonometry was the study of angles and their relationship to shapes.
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.
by calculating the angles
"IS" not "are"! The numerical study of angles and their functions.
The basic principle of trigonometry is that there are mathematical relationships between the sides and angles of a triangle.
adjacent opposite hypotenuse
The study of triangles: its sides and angles.
The understanding of shapes and angles.
"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.