Area of Triangles- Definition, Formula and Examples

Area of Triangles: The area of a triangle  or any plane figure is defined as the total space enclosed by  their sides . Unit of measurement for area of any plane figure is taken as square metre () or  square centimetre () etc. There are many ways to find the area of a triangle. Heron has  derived the famous formula for the area of a triangle in  terms of its three sides . Trigonometric functions  and determinants are also used to find the area of a triangle . In this lesson, we will learn the  different methods of finding area …

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Mensuration Formulas for 2D and 3D Shapes PDF Download

Mensuration is a branch of mathematics that deals with the study of different geometrical shapes, their perimeter,area , surface area, curved surface area,  volume  etc. Basically,  there are two type of geometric shapes (i) 2D shapes   (ii) 3D shapes 2D shapes are : circle, square, rectangle, square , parallelogram, rhombus etc. 3D shapes are : cube , cylinder, cone , cuboid, sphere , prism , pyramid , cone etc. Now let’s learn all the important mensuration formulas involving 2D and 3D shapes. Using this mensuration formula list, it will be easy to solve the mensuration problems. Mensuration formulas for 2D …

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Trigonometric values| Trigonometric ratio table

Trigonometric values  of different ratios are very important for the study  of relationships between lengths and angles of triangles.  The trigonometric values of   are  commonly used to solve many problems related to triangles. Trigonometric ratios of some specific angles not defined not defined 2 2 not defined not defined 0   Value  of all trigonometric  ratios at Let . Then Therefore  . Since ,  Solving this we get Since we get that          Now = Now            Similarly we can find ,       and  . Now By using these , we …

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List of Trigonometric Identities

Trigonometric identities  are formulas that involve Trigonometric functions. Trigonometry is a branch of  mathematics that deals with the study of relationships between lengths and angles of triangles.  The early applications of the trigonometric functions were to surveying, navigation, and engineering. These functions  also play an important role in the study of all sorts of vibratory phenomena-sound, light, electricity, etc. Trigonometric Ratios Let us take  a right triangle ABC  as shown below.   The trigonometric ratios of the angle A  in right triangle ABC  are defined   as follows : Note that the ratios cosec A, sec A and cot A are …

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