Introduction to Trigonometry Trigonometry is an important branch of mathematics. The word trigonometry is derived from three Greek words: tri (three), goni (angles), metron... Click here to read more

Concept of an Angle Two rays with a common starting point from an angle. One of the rays of an angle is called the... Click here to read more

Measurement of Angles The measure of an angle is the amount of rotations required to get to the terminal side from the initial... Click here to read more

Circular System There is another system of angular measurement called the Circular System. It is most useful for the study of higher... Click here to read more

Conversion of Radians into Degrees and Vice Versa We know that the circumference of a circle of radius is and the angle formed by one complete revolution is... Click here to read more