7.3 General Trig Identities

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Tip: Before you get all the way to the answer, you have to get half-way to the answer...

Warm Up and Questions from the Homework
"The most important thing (or the thing that you should always do first) when using a formula from your formula sheet is to _______________"

Review Quiz 7.1

Announcements

• Next quiz Thu, Mar 19 in 2nd hour (7.2-7.3 Double- and Half-Angle Identities, General Trig Identities, also see worksheets #4-5 on Moodle for extra practice on proofs)
• Next unit exam Thu, Mar 28 (55 minutes, in class)
• Summary of Studying (SOS) must be completed to write unit exam

Today - 7.3 General Trig Identities
See tips in textbook (p. 606)
Identities Puzzle Activity - Instructions
1) Get into groups of 2-3 and pull two desks together

2) Open the envelope and careful spread out the pieces of paper

3) Try to place the papers into 5 groups that look similar (will be the steps to solving the 5 identities

4) Give 1 group of papers to 1 person to try and put into the correct order (have one master sheet)

5) The first group to take a picture of their completed puzzle will win a prize (flag me down if you need me to take a picture)

Homework
7.3 #1-41
Worksheets 4-5 on Moodle

Tomorrow - 7.3 Continue General Trig Identities
Pre-read rest of 7.3


For more information

https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/trig_iden_tutorial/v/trig-identities-part-2--parr-4-if-you-watch-the-proofs
https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/trig_iden_tutorial/v/trig-identies-part-3--part-5-if-you-watch-the-proofs
http://patrickjmt.com/proving-some-random-trigonometric-identities/
http://patrickjmt.com/deriving-trigonometric-identities-from-known-identities/
http://patrickjmt.com/proving-an-identity-example-2/