Introduction to Trigonometry

In mathematics, trigonometry is an important set of disciplines which relate to two and three dimensional objects; practically anything that you can see around you can be related to the principles of trigonometry and algebra in the real world, it is very useful in engineering and construction, where its principles are important in accurately determining the lengths, sizes and areas of objects without having to actually create them first. Imagine the need to build a structure with only the basic land - area given to you: using the principles of trigonometry, you can easily calculate the geometric properties of objects to an unerring degree of accuracy.

Trigonometry, however, isn't just about using formulae to find the correct angle or size in school. It describes the relationships that occur naturally between objects and their similarity in structure. When we compare them using a similar set of ideas, it gives us a lot of power to understand the basis of other things in life beyond that of just their appearance. Even though we can look at a circle, an oval, square or rectangle, we can know that there are principles we can apply to their shape which can be expressed through one entity: the triangle.

Trigonometry (from Greek trigonon "triangle" + metron "measure") is a branch of mathematics that studies triangles, particularly right triangles. Trigonometry deals with relationships between the sides and the angles of triangles and with the trigonometric functions, which describe those relationships, as well as describing angles in general and the motion of waves such as sound and light waves. The study of angles and of the angular relationships of planar and three-dimensional figures is known as trigonometry.