Perimeter of a Triangle

What is the Triangle? In geometry, a triangle is a type of polygon which have three sides. All the triangle sides may be the same or maybe not, it depends on the triangle types. Perimeter of a Triangle The perimeter of a triangle is the addition of all its three sides. Perimeter of a triangle … Read more

Perimeter of a Square

What is square? A square is a kind of rectangle in which all sides of the square are equal. In the square, total angles are the same and equal 90º.  Perimeter of a square The perimeter of a square is the entire distance of each side of the square. Therefore we can determine the perimeter … Read more

The Law of Cosines

In any given triangle a, b, and c  are the sides of the triangle and also opposite angles are A, B, and C. Then the Cosine Rule states c2 = a2 + b2 − 2ab cos(C) It is also called The Law of Cosines Formulas (Versions for a, b and c) According to the cosines law formula, to … Read more

The Law of Sines

Law of Sines or Sine Rule is helpful for solving the unknown side of an oblique triangle or angle. It contains all the three sides of a triangle corresponding to their sides and angles. These lows perform for all types of triangles. The sine rule should run with at least two angles and its corresponding … Read more

Trigonometric Identities

Trigonometric Identities are valuable whenever trig functions are included in an expression or a comparison. Trig identity changes are accurate for each value happening on both sides of an equation. The Trig identities hold correct only for the right-angle triangle. The 6 basic trigonometric degrees are sine, cosine, tangent, cosecant, secant, and cotangent. All these … Read more

Trigonometric table

A trigonometric table is a table of values of trigonometric ratio like sin, cos ,tan, cot, cosec and sec from 0 to 360. This trig table holds corners in degrees and radians, that very helpful for translation of degrees in radians or vice versa. Trigonometric Values Table You can see below trigonometric values table or … Read more

Natural Numbers – Concepts

The numbers 1, 2, 3, 4, … In natural numbers  zero (0) does not included. We use the symbol ‘ (N) ‘ for natural numbers. N = {1,2,3,4,5,6,7,8,9,10…….} Natural Numbers and Whole Numbers A whole number, positive or negative. In whole numbers include the number 0. On the other hand in Natural Numbers include all … Read more

Decimal point

When we write out a number that has a fractional part, as a decimal. We write it with a dot separating the whole-number part from the fractional part. This is how we know which digit is the units, which is tens, etc. The dot is called a decimal point.

Triangular number

What is the Triangular number? A number which can be represented by a triangular array of dots. 1, 3, 6, 10, are all triangular numbers. The nth triangular number is n(n+1)/2. All integer is the sum of at most 3 triangular numbers. If t is a triangular number, 8t+1 is a square. The square of … Read more

Sequence or Progression

A list of numbers that goes on forever. The numbers have described the terms of the sequence. There is usually some rule which says what the next term will be. Eg: 1, 3, 5, 7, 9 … 2, 3, 8, 63, 3968 … 0, 3.5, 13, 31.5, 62, 107.5 … Arithmetic progression An arithmetic progression … Read more