# Feb 17 Precalculus Sum and Difference Formulas

Check Notes on Sum and Difference Formulas—-

Warm- Up Feb 17 VERIFY TSWBAT prove and apply the sum and difference formulas for sine, cosine and tangent

Practice Applying Sum and Difference Formulas

Mastermathmentor P 3-4

TH Quiz:

Verify the following Trig Identities # Feb 17 Statistics Ch 10.2 t-distributions

TWSBAT Apply t-distributions to generate a confidence interval to estimate a population mean.   They will be able to use t-tables, and generate intervals by hand and by calculator.

Activity 10C: Comparing the z and t distributions

Mr. Lange wanted to know how long the typical HHS student could hold their breath. He randomly sampled 16 students and measured how long they could hold their breath (in seconds)

Here is the data

# of seconds each student was able to hold breath

 126.6 141.5 140.9 91.9 157.1 119.1 94.2 131.1 71.5 128.2 113.7 120.7 130.4 153.5 140.5 109

1. Make a Histogram of the Data using 5 equal classes.

2. Can t-procedures be used? If not, explain why not. If so, explain why and generate a 95% confidence interval for the mean # of seconds an HHS student can hold his or her breath.

# FEB 17 Calculus AB Area–> Volume

TSWBAT find the volume of a surface of rotation using disks

Area Quiz:

1. Find the area bounded by and without a calculator

2. Find the area bounded by and WITH a graphing calculator

BASIC NOTES ON VOLUME using the DISC method.  Volume of a cylinder… Volume of a Cone

TH Quiz- Work MUST BE SHOWN 