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Difference Between Geometry and Trigonometry

August 14, 2011 Posted by Admin

Geometry vs Trigonometry

Mathematics has three main branches, named as Arithmetic, Algebra and Geometry. Geometry is the study about shapes, size and properties of spaces of a given number of dimensions. The great mathematician Euclid had made a huge contribution to the field geometry. Therefore, he is known as Father of Geometry. The term “Geometry” comes from Greek, in which, “Geo” means “Earth” and “metron” means “measure”. Geometry can be categorized as plane geometry, solid geometry, and spherical geometry. Plane geometry deals within two-dimensional geometric objects such as points, lines, curves and various plane figures such as circle, triangles and polygons. Solid geometry studies about three-dimensional objects: various polyhedrons such as spheres, cubes, prisms and pyramids. Spherical geometry deals with three-dimensional objects such as spherical triangles and spherical polygon. Geometry is used daily, almost everywhere and by everyone. Geometry can be found in physics, engineering, architecture and many more. Another way of categorizing geometry is Euclidian Geometry, the study about flat surfaces, and Riemannian geometry, in which the main topic is the study of curve surfaces.

Trigonometry can be considered as a branch of geometry. Trigonometry is first introduced at about 150BC by a Hellenistic mathematician, Hipparchus. He produced a trigonometric table using sine. Ancient societies used trigonometry as a navigation method in sailing. However, trigonometry was developed over many years. In modern mathematics, trigonometry plays a huge role.

Trigonometry is basically about studying properties of triangles, lengths, and angles. However, it is also deals with waves and oscillations. Trigonometry has many applications in both applied and pure mathematics and in many branches of science.

In trigonometry, we study about the relationships between the side lengths of a right angle triangle. There are six trigonometric relations. Three basic, named as Sine, Cosine, and Tangent, together with Secant, Cosecant, and Cotangent.

For instance, suppose we have a right angle triangle. The side in front of the right angle, in other words, the longest base in the triangle is called hypotenuse. The side in front of any angle is called opposite side of that angle, and the side left behind to that angle is called adjacent side. Then we can define the basic trigonometry relations as follows:

sin A=(opposite side)/hypotenuse

cos A=(adjacent side)/hypotenuse

tan A=(opposite side)/(adjacent side)

Then Cosecant, Secant and cotangent can be defined as the reciprocal of Sine, Cosine and Tangent respectively. There are many more trigonometry relationships built upon this basic concept. Trigonometry is not only a study about plane figures. It has a branch called spherical trigonometry, which studies about triangles in three-dimensional spaces. Spherical trigonometry is very useful in astronomy and navigation.

What is the difference between Geometry and Trigonometry?

¤ Geometry is a main branch of mathematics, while trigonometry is a branch of geometry.

¤ Geometry is a study about properties of figures. Trigonometry is a study about properties of triangles.

Related posts:

Difference Between Sin and Cos Difference Between Calculus and Geometry Difference Between Arithmetic and Mathematics Difference Between Algebra and Trigonometry Difference Between Integration and Differentiation

Filed Under: Mathematics Tagged With: adjacent side, Algebra, Arithmetic, cosecant, cosine, Cotangent, Euclid, Euclidian geometry, geometry, Hipparchus, hypotenuse, opposite side, plane geometry, Riemannian geometry, secant, sine, solid geometry, spherical geometry, spherical trigonometry, tangent, trigonometric relations, trigonometry

About the Author: Admin

Coming from Engineering cum Human Resource Development background, has over 10 years experience in content developmet and management.

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