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That's the definition of trigonometry. Triangles are completely dependent upon their side lengths, and can be defined by only three values.

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Q: Why are similar triangles the basis for trigonometry?
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What is the difference between plane trigonometry and spherical trigonometry?

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.


How do you teach trigonometry?

Start by teaching the basic properties of different triangles because trigonometry is the science of triangles.


What is the language of triangles?

trigonometry


How is trigonometry applied?

Trigonometry is applied in construction and building, as trigonometry measures right angled triangles.


Is trigonometry the study of triangles?

Yes


How make trigonometry?

With triangles and rules about them.


What are uses of similar triangles in daily life?

Similar triangles can be used in many situations in which angles of two differently-sized triangles are the same. Optics, scale modeling,trigonometry, surveying, astronomy, and many, many other applications of mathematics rely on the concept of similarity.


How do you understand trigonometry?

It is simple the study of triangles: the properties of their sides and angles. This is then extended to other, more complicated polygons and polyhedra, but the basis is still the triangle.


Where did trigonometry come from?

The study of trigons - or triangles.


What is triigonometry?

Trigonometry is the study of triangles and their properties


What is meant by trigonometry?

It is the study of triangles and their properties. The word 'trigonometry' means three measurements.


What are the different application of trigonometry?

Trigonometry is used to find the properties of triangles and Pythagoras' theorem is used to find the lengths and angles of right angle triangles.