Lesson 4.2: Sketching of Trigonometric Functions and Transformation
1. pg345 - 346. #7，8cf (describe the steps of transformation and sketch), 10, 11, 12, 14
2. Self-Study Chapter 6.3 - tangent curve and Chapter 6.5 - Graphs of Reciprocal trigonometric function
3. Read word problem example 1 on pg354, work on pg361. #7, 8