In the field of complex numbers, De Moivre’s Theorem is one of the most important and useful theorems which connects complex numbers and trigonometry. Also helpful for obtaining relationships between trigonometric functions of multiple angles. DeMoivre’s Theorem is also known as “De Moivre’s Identity” and “De Moivre’s Formula”. The name of the theorem is after […]

Definition As an observer looks downward at an object, an angle of depression is formed. This angle forms between a line that is parallel to the observer’s eye and the line of sight.  Formula The formula for angle of depression is the same as the basic trigonometric ratio formulas. We can easily find the angle

Data values of less than or equal to a certain value are considered cumulative relative frequency. Percentages are usually used to express it. In a test of 100 marks, for example, assume that 60 marks have a cumulative frequency of 85%. A total of 85% of students scored less than 60 on the test. Cumulative

A quadrilateral has two diagonals, and four equal sides with opposite sides equal called a parallelogram. In a parallelogram its sides never intersect but its diagonal intersects each other at the center point. The diagonal divides the parallelogram into two equal parts.  A parallelogram is a two-dimensional figure, and you can calculate its perimeter using

In Latin, circumscribe means “around” and scribere, which means to write. If you’re reminded of geometry class by circumscribing, pat yourself on the back. When two geometric figures are circumscribed, they touch but do not intersect. Watching too much TV might have been a good idea if you studied geometry, but this sounds unfamiliar to

is the derivative of square root of . Different methods of differentiation can be used to calculate this derivative, such as the chain rule, the power rule, and the first principle of derivatives. A derivative of square root of x can be written mathematically as or , using the power rule . The derivative of

Unit Circle What is Unit Circle? It can be defined as a circle that has one unit of radius. Cartesian coordinates are commonly used to represent unit circles. With two variables x and y, we can algebraically represent the unit circle. Trigonometric ratios like sine, cosine, and tangent can be found with the unit circle

When solving higher degree equations, factoring is a useful tool for simplifying many algebraic expressions. Without understanding factoring, it is extremely difficult to progress in algebra beyond this point. It has been stressed in earlier chapters that terms and factors should be distinguished. Addition and subtraction of terms and multiplication of factors should be remembered.

A degree in math provides an opportunity to work on real-world problems and solve them. Several roles require an understanding of mathematical concepts, so studying them is an important discipline. There are four basic elements of mathematics: quantity, structure, space, and change. The essence of math is to seek absolutes, definitive answers, and solutions, no

‘X’ is used in algebra as a variable. It is often used for unknown values.  ‘X’ is sometimes called ‘unknown’. Variables can be letters, numbers, symbols, or a combination of those. It does not have to be “X”. It can be either “Y” or “W”. For example: x+1=5 x =5-1 x =4 Here x is