PreCalculus: Lesson Plan * 8/25/2006

• Quickstart p.322 #121 - 124
• Lesson
  (4.5) Graphs of Sine and Cosine Functions p.323
  
  1. Complete a table of values for y = sin(x) and y = cos(x) using
     -2π, -3π/2, -π, -π/2, 0, π/6 (sine only), π/3 (cosine only) π/2, π, 3π/2, 2π as x values.
  2. Graph the sine and cosine functions using the table of values.
  3. Determine Max, min, and intercepts for sine and cosine functions
  4. Period for y = sin(x) and y = cos(x) is 2π
  5. y = sin(x) and y = cos(x) are a π/2 horizontal translation of each other so we get the cofunction relationships listed at the bottom of p.305
  6. Simplify Radicals Practice (Block I only)
     √27/√81 = √3
     √(25/4) = 5/2
     √(50/9) = 5√2/3
     √72/√50 = 6/5
     √75 - 4√75 = -15√3
     
• HW
  Read Section 4.5 - Graph of Sine and Cosine
  Complete notes for the section using the Student Success Organizer