Math| ClassNotes| 1st Year| Chapter# 8| Ex: 8.1

National Book Foundation 

Chapter # 8

Exercise: 8.1

 

Key Concepts of Exercise 8.1:

1. Basic Trigonometric Ratios:

   • Definitions and applications of sine (sin), cosine (cos), and tangent (tan) functions for angles in a right-angled triangle.

2. Trigonometric Functions of Specific Angles:

   • Values of trigonometric functions for standard angles such as 0°, 30°, 45°, 60°, and 90°.

3. Trigonometric Identities:

• Fundamental identities like Pythagorean identities, reciprocal identities, and quotient identities.

Tips for Solving Exercise 8.1

1. Familiarize Yourself with Key Angles:

   • Memorize the trigonometric ratios for angles like 0°, 30°, 45°, 60°, and 90°.

2. Practice Applying Identities:

   • Use trigonometric identities to simplify expressions and solve equations.

3. Work on Real-World Problems:                                                                                          

• Apply your knowledge to solve practical problems involving right-angled triangles.