News You Can Use

Monday

• HOLIDAY - NO SCHOOL

Tuesday

• Read Sine Addition and Subtraction Identities
• Complete Proving Sine Addition and Subtraction Identities Task
• Complete Trigonometric Identities Discussion 2
  

Wednesday

• Read Tangent Sum and Difference Identities
• Complete Proving Tangent Addition and Subtraction Task
  

Thursday

• Read Double-Angle and Half-Angle Identities
• Complete Trigonometric Identities Quiz 2
  

Friday

• Complete Trigonometric Identities Test

OR

• Complet Trigonometric Identities Project
  

In order to get full credit on the discussions assignments, you will need to be sure to do a couple of things...

• Read and make sure you follow the directions provided in the prompt. If the directions tell you to write a paragraph, you will be expected to do just that.

• When it comes time to respond to the posts of your peers, write a substantive response. "I agree." "Good job!" and "Cool, I didn't think about that" DO NOT COUNT as substantive responses and although you are being supportive and encouraging of your peers, you will not get any participation credit.

• For both your original response and the responses to your peers, write a few sentences that clearly extends the conversation and shows your teacher that you really have a good understanding of the topic discussed.

• When you write your posts, also be sure to use proper grammar, spelling, and mechanics. Try not to use the same type of language that you use for texting - You should spell out all of your words.

• Finally, make sure your posts are clear. You will need to articulate your points and respond in a timely manner.

Trigonometric Identity Discussion 2

To answer this question you need to create a video explaining how to solve an identity algebraically and graphically.

Trigonometric Identities Quiz 2

Evaluating Angle Sum and Difference Formulas (Cosine, Sine, and Tangent)

https://youtu.be/sGDbKmWmTDw

https://youtu.be/xQ5xZ72Iw40

Double Angle Formulas

https://youtu.be/7Eo-fuy0f7g

Half Angle Formulas

https://youtu.be/uFbbF-IYFjM

DOWNLOAD AND PRINT THE WORKSHEET AND SHOW YOUR WORK ON THE WORKSHEET, BOX YOUR FINAL ANSWER

OR

ON YOUR OWN PAPER: WRITE THE PROBLEM, SHOW YOUR WORK, AND BOX THE ANSWER.

UPLOAD YOUR COMPLETED WORK INTO THE APPROPRIATE DROPBOX

Proving Sine Addition and Subtraction Identity Task

#1. Are they acute, obtuse, straight or right triangles. How do you know?

#2. Look at the angle, what two angles make that angle. Create a number sentence to describe (addition, subtraction, multiplication or division)

#3. What is the ratio for sine? Substitute the actual parts from the triangle into that ratio

#4. Look at the given figure to determine

a-c - read and follow the explicit instructions

a-b - read and follow the explicit instructions

#1 and 2 Use your formula to complete these two problems

Write your two formulas for Sine Addition and Subtraction

Proving Tangent Addition and Subtraction Identity Task

For this task, you use knowledge acquired from the Cosine and Sine Addition/Subtraction tasks and follow the instructions to develop the tangent identities.

Trigonometric Identity Test

• Review the problems from the two quizzes in this unit, your notes, the course content (do the interactive quizzlets for review) and/or view the videos posted in this and the previous newsletter. Make sure that you have reviewed quiz feedback and attend synch sessions for clarification and practice games/activities.

OR

Trigonometric Identities Project

All work must be original (except the actual identity).

1. Choose an identity that you would like to prove. You can find identity problems on the Internet or in Math textbooks. If you need one, just ask, I have MANY!! One side of the identity will be the "original identity" and the other side will be the new "identity".
   
2. Create a passport for the "new identity". Include a Picture of the "new identity"; background story (that you make up) and details of how the old identity was changed to the new identity.
3. Determine the domain of your original identity and then find the inverse of it to provide the"new identity" a new location. Include all details of how you came up with the new location.
4. Make sure your work is neat, orderly, creative, and organized.

Ms. Watkins has been teaching mathematics for 19 years (online for 3 years). She has a B.S. in Mathematics from Dillard University, a M.S. in Mathematics Education from Florida State University, and is gifted certified and AP certified in Calculus AB and Statistics. She currently teaches at Arabia Mountain High School (DeKalb County School District), where she is the Department Chair and a Senior Class Sponsor, and at Georgia Virtual School.

Email: dierdre.watkins@gavirtualschool.org
Website: https://sites.google.com/site/acceleratedccgpsprecalculus/
Location: Lithonia, GA, United States
Phone: 404-489-2619
Twitter: @WatkinsDierdre