1. PreCalclus 4-5 Graphs of Sine and Cosine Functions

2. Trigonometric Graphs - Activity Use the unit circle (paper plate) that was saved from the unit circle lesson. Wrap a piece of yarn around the circle, and mark each of the main values on the yarn with a marker.

3. Trigonometric Graphs - Activity Put a straight line across two pieces of paper, and transfer the radian measures from the piece of yarn Label each mark appropriately

4. Trigonometric Graphs - Activity Break pieces of spaghetti to the length of the y value (sine) for each graph marking. Glue these pieces onto your paper at the appropriate locations Be sure to show the third and fourth quadrants as negative.

5. Trigonometric Graphs - Activity With another piece of yarn, or a marker, connect all the tops of the spaghetti with a smooth line. Let the glue dry

6. Trigonometric Graphs

29. Amplitude = 2 Period = π/2 Phase Shift = 1.3 to the right

30. Trigonometric Graphs Graph one complete period. Amplitude = 2 ½ / 2 Period = 2π/3 Phase Shift = 2/3 to the leftt

31. Trigonometric Graphs

32. Menu > 4 > 1 Play with the window to get a good view of the function

33. Trigonometric Graphs

34. Graph this function and comment on its behavior when x is close to zero

36. Homework Pg 294 - 296 1 – 71 odd, 75