Class Objectives:

1. Understand the basic concepts of trigonometry.
2. Learn about trigonometric ratios: sine, cosine, and tangent.
3. Identify and label the sides of a right-angled triangle.
4. Apply trigonometric ratios to find missing sides in right-angled triangles.

Class Outline:

1. Introduction (5 minutes):

   • Greet the students and introduce yourself.
   • Briefly explain the importance of trigonometry in mathematics and real-life applications (e.g., engineering, architecture, astronomy).

2. Warm-Up Activity (10 minutes):

   • Start with a quick review of Pythagoras' theorem to refresh their memory of right-angled triangles.
   • Use simple examples to solve a couple of right-angled triangle problems involving Pythagoras' theorem.

3. Explanation of Trigonometry Basics (15 minutes):

   • Define trigonometry as the study of relationships between the angles and sides of triangles.
   • Explain the terms "opposite," "adjacent," and "hypotenuse" with respect to a right-angled triangle.
     • Opposite: The side opposite to the angle of interest.
     • Adjacent: The side adjacent (next to) the angle of interest.
     • Hypotenuse: The longest side of the triangle, opposite the right angle.
   • Draw a right-angled triangle on the board and label these sides.
4. Introduction to Trigonometric Ratios (20 minutes)
5. Interactive Practice and QnA (10 minutes)