## Lesson 15.3 - The Sine and Cosine Functions

**Essential Question(s):**

Explain the characteristics of the unit circle.

Explain the behavior and characteristics of the sine and cosine functions.

**Follow the steps to complete your notes and review the content.**

**STEP 1: Preparation**

__Title__your spiral with the heading above,

__copy__the essential question(s), and draw your border line for the Cornell notes.

**STEP 2: Textbook**

__Answer__the follow questions by using your workbook.

__Read__more than enough to ensure a complete answer to the question.

Following a

__Cornell notes format__, the questions should be written in the left-hand column and with the answers to the right of the question.

Make sure to

__write enough to answer the question__.

__Problem 1__

- What are the three trig ratios and two special right triangles?
- What information is listed on the unit circle?
- What symmetry and patterns exist in the unit circle?

__Problem 3__

- What does the parent sine function look like? (Sketch the parent sine function. List key values and graph on the interval -2pi to 2pi.)
- What does the parent cosine function look like? (Sketch the parent sine function. List key values and graph on the interval -2pi to 2pi.)
- What characteristics are the same between the sine and cosine function?
- What characteristics are different between the sine and cosine functions?

__Chapter Summary__

- Review on your own. Add any questions and answers you want.

**STEP 3: Self-check**

Perform a self-check after the lesson is completed in class by asking yourself the following question:

*"Can you*

__answer__the essential question(s)__completely__?"- Yes? Awesome job! You took
__effective notes__, and__paid attention__. You are on your way to success! :D - No? Ok. We all have struggles.
__Determine__why you said no, r__evise__your notes and self-check again.__Do not get discouraged__.