Pre-Calc: 1-28-2011

5.1


Objectives:

• Introduce trig identities

• Introduce verification of trig identities

Assignment
p. 553;4-60x4’s

Algebra 1B Jan 27, 2011

Go to:
http://mathinsite.bmth.ac.uk/html/applets.html#parabAnchor

Click on the link that looks like the picture below. The applet sometimes loads slowly.  Use the applet to answer questions.

Pre-Calculus

Ch 4 Test

Statistics: January 26th

• Review Sections 1 and 2 of Ch 6
• Answer Questions over 6.4 and Review Assignment
• Work on 6.4 and Review

Algebra 1B for 1/24/2011

Image by pixelthing via Flickr

Go to the following webquest and follow the directions given.  You may and are encouraged to work in pairs.  You must write all of your answers down on a piece of paper.  One page per group is acceptable. You are under no circumstances to check email or do other non-math related stuff.  Sorry.

Go Here:
WebQuest

This is the only page you must complete.  Try to finish in class.  Have fun!

Algebra 1B-January 18, 2011

p. 841;1-24 all...follow directions as given in book.  (Lesson 10.1)
Quiz Tomorrow!

Tuesday-January 18th-2011-Statistics

Go to http://bcs.whfreeman.com/ips4e/cat_010/applets/confidenceinterval.html
Start off using a confidence level of 95%
Answer the following questions:

1. Click sample and take mental note of the length of CI.  Now change level to 99%.  How did length of CI change?
2. Do the same with levels 90% and 80%. 

The Pew Research council asked cell phone owners, "Have you ever received unsolicited text messages on your cell phone from advertisers?"  17% reported they had.  Pew estimates a 95% confidence interval to be 0.17+/-.04 or between 13% and 21%.  Are the following statements correct? Explain.

1. In Pew's sample, somewhere between 13% and 21% of respondents reported they had received unsolicited text messages. 
2. We can be 95% confident that 17% of US cell phone owners have received unsolicited advertising text messages.
3. We are 95% confident that between `13% and 21% of all US cell phone owners have received unsolicited advertising text messages.
4. We know between 13% and 21% of all US cell phone owners have received unsolicited advertising text messages.
5. 95% of all US cell phone owners have received unsolicited advertising text messages.

January 13th, 2011

Image via Wikipedia

• Pre-Calculus...p. 493;3-57x3s...Graphing Sine and Cosine Functions...
• Statistics...Grade Case Studies on Bears...Answer Questions on 6.2...Notes on 6.3 and Assignment which will not be graded 'til Tuesday
• Algebra 1B...Worksheet on Graphing Quadratic Functions

Wednesday, January 12th

• Pre-Calculus: We graded p. 474, I collected the trig graphs assigned Monday, and I started to give notes on sine and cosine graphs
• Statistics: We graded section 6.1...and then we worked on case study and assigned p. 300;1-10,12-24x3s
• Algebra 1B...p. 528-18-29 all...find the vertex only

Statistics

Image via Wikipedia

Work on assignment given yesterday...
Sampling error is difference between population mean and sample mean (not in notes)

Algebra 1B

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Finish yesterday's work and then...

Worksheet on Quadratic Function where you will graph with labelling the vertex, x-intercepts (if any), y-intercept, and a minimum of 2 additional points

Pre-Calculus

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4.4 Trig Functions of Any Angle

• ASTC
• Finding what angle has a given trig ratio
• Finding the trig ratio for a given angle

p.474;3-66x3s

Statistics

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Confidence Intervals for the Mean

• Point Estimate
• Interval Estimates
• Maximum Error of Estimate
• Sample Size

assignment...p. 287;1-8,9-63x3s

Algebra 1B

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Graphing Quadratic Functions Review

• Graphing Quadratic Functions WS

Pre-Calculus 1/6/2011

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Section 4.3 Right Triangle Trig

• Using right triangles to evaluate trig functions
• Find function vals for 30,45, and 60 degrees
• Cofunctions
• Use right triangles to solve application problems

p. 461;3-48x3s,58,62