libraries have trig books.
trigonometry is very imr
Cartography (map drawing) was based on trigonometry.
The field emerged during the 3rd century BC from applications of geometry. Trigonometric functions were among the earliest uses for mathematical tables.
The uses of Sin, Cos etc. in Maths is in relation to Trigonometry. Trigonometry is the study of the relationship between angles and lengths of triangles.
A construction crane uses a large hook, or a wrecking ball.
Trigonometry helps you to easily read the rate of heart beats of a person and their blood pressure level as well.
Trigonometry is the study of plane and spherical triangles. Plane trigonometry deals with 2 Dimensional triangles like the ones you would draw on a piece of paper. But, spherical trigonometry deals with circles and 3 Dimensional triangles. Plane trigonometry uses different numbers and equations than spherical trigonometry. There's plane trigonometry, where you work with triangles on a flat surface, then there's spherical trigonometry, where you work with triangles on a sphere.
1) Surveying; 2} Architecture; 3)
The ancient rules of trigonometry are still used today in navigation, aviation, architecture, astronomy, building, engineering, education ..... etc
Precalculus is supposed to be a stringent and comprehensive review of both algebra and trigonometry. This is in preparation for calculus which uses both algebra and trig extensively.