Angular displacements measured in radians or stradians, lengths of lines measured in units of length.
Trigonometry based on a unit circle and radians and trigonometry based on a right triangle.
Trigonometry is a branch of geometry which is primarily concerned with the properties and measurement of triangles.
trigon = triangle metry = measurement.
'Trigonometry' comes from Greek: 'trigonon' = 'triangle' and 'metron' = 'measure'. So, basically, the measurement of triangles.
From Greek: tri = threegon = corner metry = measurement.
distance and angle
Trigonometry based on a unit circle and radians and trigonometry based on a right triangle.
Trigonometry is a branch of geometry which is primarily concerned with the properties and measurement of triangles.
"Trigonometry" comes from the Greek words trigonon and metron, and roughly translates to "the measurement of angles".
Feet and inches
trigon = triangle metry = measurement.
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.
'Trigonometry' comes from Greek: 'trigonon' = 'triangle' and 'metron' = 'measure'. So, basically, the measurement of triangles.
Trigonometry
The side that the measurement of an angle starts from.
From Greek: tri = threegon = corner metry = measurement.
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.