The document discusses expressing trigonometric functions in terms of sine and cosine. It explains that secant can be expressed as the reciprocal of cosine, cosecant as the reciprocal of sine, tangent as sine over cosine, and cotangent as cosine over sine. The homework is to read the assigned pages and complete problems 1 through 12 on page 678.

1. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas Do Now: a. cos 3 2 Express as an angle less than 45 o or : b. tan( -150 o ) c. csc 260 o 4 Name the six trigonometric functions HW: Read 672-678 Do pg 678 #1-12

2. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas How can we convert sec θ into sine or cosine? sec θ = 1 cos θ HW: Read 672-678 Do pg 678 #1-12

3. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas What else can we convert into sine or cosine? csc θ = 1 sin θ tan θ = sin θ cos θ cot θ = cos θ sin θ HW: Read 672-678 Do pg 678 #1-12

4. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas Express in terms of sine and cosine: sec θ cot θ tan θ csc θ HW: Read 672-678 Do pg 678 #1-12

5. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas HW: Read 672-678 Do pg 678 #1-12

6. Aim: How do we express trigonometric functions in terms of sine and cosine? MB43 12/2/08 Lomas HW: Read 672-678 Do pg 678 #1-12