WARM-UP Prove: sin2 x + cos2 x = 1 This is one of 3 Pythagorean Identities that we will be using in Ch. 11. The other 2 are: 11.1 - Basic Trigonometry Identities Objective:…

C1: Chapter 4 Graph Sketching C1: Chapters 8 & 10 Trigonometry Dr J Frost ([email protected]) www.drfrostmaths.com Last modified: 1st September 2015 Sin Graph…

5.3 Right-Triangle-Based Definitions of Trigonometric Functions For any acute angle A in standard position, Right-Triangle-Based Definitions of Trigonometric Functions For…

Sum and Difference Formulas New Identities Cosine Formulas Sine Formulas Tangent Formulas Using Sum Formulas to Find Exact Values Find the exact value of cos 75o cos 75o…

Vocabulary reduction identity Key Concept 1 Example 1 Evaluate a Trigonometric Expression A. Find the exact value of cos 75°. Example 1 Evaluate a Trigonometric Expression…

Sum and Difference Formulas New Identities Cosine Formulas Sine Formulas Tangent Formulas Using Sum Formulas to Find Exact Values Find the exact value of cos 75o cos 75o…

Chapter 4 Identities 4.1 Fundamental Identities and Their Use 4.2 Verifying Trigonometric Identities 4.3 Sum, Difference, and Cofunction Identities 4.4 Double-Angle and Half-Angle…

Chapter 5 Inverse Trigonometric Functions; Trigonometric Equations and Inequalities 5.1 Inverse sine, cosine, and tangent 5.2 Inverse cotangent, secant, and cosecant 5.3…

Develop a formula for sin (3θ) in terms of sin θ and cos θ. Write an equivalent expression for cos^4θ that does not involve any powers of sine or cosine greater than…

C1: Chapter 4 Graph Sketching C1: Chapters 8 & 10 Trigonometry Dr J Frost ([email protected]) www.drfrostmaths.com Last modified: 1st September 2015 Sin Graph…