Reflection: Developing a Conceptual Understanding The Parent Functions are Related to Sine and Cosine - Section 3: Extend


Something that I can easily take for granted is the knowledge that the coefficient of 2 in y = cos(2(x - 60°)) is a horizontal change instead of a vertical change. I try to stress to students that the values inside the parentheses that are grouped with the x-variable will affect the graph horizontally and those values that are outside of the parentheses will affect the vertical aspects of the graph. 

It is definitely a good idea to review these concepts if you feel they are necessary for your class.

  How to Categorize Transformations
  Developing a Conceptual Understanding: How to Categorize Transformations
Loading resource...

The Parent Functions are Related to Sine and Cosine

Unit 4: Trigonometric Functions
Lesson 3 of 14

Objective: SWBAT graph the parent functions for the six trigonometric functions.

Big Idea: Use properties of sine and cosine to graph all of six trigonometric parent functions.

  Print Lesson
1 teacher likes this lesson
Similar Lessons
Graphing & Modeling with Exponents
Algebra II » Exponents & Logarithms
Big Idea: How high will the basketball bounce and will it ever stop? An exponential model sheds light on the question!
Fort Collins, CO
Environment: Suburban
Jacob Nazeck
Comparing Rates of Growth
Algebra I » Functions
Big Idea: Which company will make more profit? Students compare and contrast a linear growth model and an exponential growth model. They work with a variety of representations to determine when the two companies will have the same amount of money.
Boston, MA
Environment: Urban
Amanda Hathaway
Modeling Real World Data (Day 1 of 4)
12th Grade Math » Cyclical Patterns and Periodic Functions
Big Idea: Students collect data and use trigonometry to describe their world by modeling the data on posters.
Phoenix, AZ
Environment: Urban
Tiffany Dawdy
Something went wrong. See details for more info
Nothing to upload