How to Find Median Value of Odd and Even Set of Data In this lesson we will learn how to calculate the median of a data set, when data set has odd and even numbers or observations. To learn the median of a data set, first we should understand what is median. (You can learn […]
Read More →Law of Tangents – Definition – Formula – Proof and Examples In trigonometry, the law of tangents describes the relationship between the sum and difference of sides of a right triangle and tangents of half of the sum and difference of the angles opposite to the sides. Formulas for law of tangents The law of tangents […]
Read More →Simple Interest Word Problems Example 1: What is the simple interest and amount of $ 2000 at the rate of 8% per year for 2 1/2 years. Solution: Principal amount = P = $ 2000 Rate of interest per year = R = 8% Time for which it is borrowed = T = 2 1/2 year Thus, simple […]
Read More →Diagonals of Polygon’s In geometry, a line segment joining two vertices of a polygon or polyhedron, when those vertices are not adjacent is known as Diagonal. Diagonals of Polygon’s A polygon’s diagonal’s are line segments, that joining from one corner to another corner. Formula for number of diagonals = n(n-3)/2 where n is number of sides or […]
Read More →Introduction – Percentage Definition: A Percent is a number or ratio expressed as a fraction of 100. In other words, Percent is a fraction of denominator 100. Percent is denoted by the symbol %. ‘Per’ ‘cent’ means out of 100. The percent symbol is written to the right side of the number, like this 15%. Example: 25% (read as twenty five percent) […]
Read More →Area of a Triangle In this lesson we will learn, how to calculate the area of a triangles with different formula’s. When given 1. The base and height of a triangle.2. Two sides and one angle.3. The length of three sides.4. An equilateral triangle. First we see about a triangle. A triangle is a simple […]
Read More →Commutative Property of Multiplication Definition: It doesn’t matter which order the numbers are multiplied, any case we will get same answer. Example 1: If we multiplying two and three together we get 4 x 3 = 12 4 x 3 = 12 […]
Read More →Commutative Property of Addition Definition: It doesn’t matter which order the numbers are added, any case we will get same answer. Example 1: If we adding three and four together we get, 3 + 4 = 7 […]
Read More →Solutions – Union and Intersection of two Sets 1.If X and Y are two sets such that X∪Y has 40 elements, X has 22 elements and Y has 30 elements, how many elements does X∩Y have? Solution: Given that n(X∪Y) = 40, n(X) = 22, and n(Y) = 30, n(X∩Y)= ? By using the formula n(X∪Y) […]
Read More →Circle – Area – Formula and Problems with Solutions Area of a circle is A = 𝝿r2 = 𝝿 (pi) x (radius)2 , where r is radius of the circle. or when we know the diameter A = (𝝿/4) x D2 when we know circumference A = c2/4𝝿 Let us now solve problems on area of a circle. Here […]
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