Trigonometry

Concept Learning Sessions

Session # 1 Angle Measure: Sexagesimal System, Centesimal System, Circular Measure

Session # 2 Theorem: The ratio of the circumference and the radius of a circle is a constant.

Session # 3 What is pi? The session discusses the approximate value of pi and various expressions (definite integrals, continued fractions) whose value is equal to pi. Also, it discusses the method of finding approximate values of pi using continued fraction.

Session # 4 Trigonometric Ratios - 1: Using a unit circle the definition of the 6 T-ratios has been explained using Geogebra tool.

Session # 5 Trigonometric Ratios - 2: Change in the value of T-Ratios with the change in the value of angle. T-Ratios are dependent on angle - demonstrated through Geogebra tool.

Session # 6 Trigonometric Ratios - 3: T-Ratios depend only on the angle and not on the side-lengths of a right angled triangle.

Problem Solving Sessions

Session 1 Sector Angle = Arc Length/Radius. To find the diameter of the Sun, if the average distance between the Sun and Earth and the angle subtended by the Sun's Diameter on an observer's eye standing on earth are given.

Session 2 Trigonometric Identities: Problem based on Trigonometric Identity

Session 3 Trigonometric Identities: Problem based on Trigonometric Identity