G. De Silva

trig identities

Trigonometric Identities

A Trigonometric identity or trig identity is an identity that contains the trigonometric functions sine(sin), cosine(cos), tangent(tan), cotangent(cot), secant(sec), or cosecant(csc). Trigonometric identities can use to: Simplify trigonometric expressions. Solve trigonometric equations. Prove that one trigonometric expression is equivalent to another so that we can replace the first expression by the second expression. The following …

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Role of Euclidean Geometry in High-School Mathematics

Role of Euclidean Geometry in High-School Mathematics

If only because in one’s “further” studies of mathematics, the results (i.e., theorems) of euclidean geometry appear only infrequently, this subject has come under frequent scrutiny, especially over the past 50 years, and at various stages, its very inclusion during a high-school mathematics curriculum has even been challenged. However, as long as we still think …

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Perimeter of Circle featured

Perimeter of Circle

In Perimeter of circle lesson, we are going to discuss, What is the Perimeter of circle or circumference of circle Circumference equation or circumference formula Perimeter of semicircle Perimeter of quarter circle Perimeter of sector What is the Perimeter of Circle Before moving into perimeter let’s recall some knowledge about key features of circle. Center …

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How to Multiply Fractions Step by Step

3 Steps – How to Multiply Fractions

Multiply fractions can discuss under three main categories. Multiplication of proper fractions  Multiplication of improper fractions Multiplication of a mixed numbers Multiplication of Proper Fractions A proper fraction is a fraction that is less than one, with the numerator less than the denominator. Example : To multiply proper fractions you have to follow only three …

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