Double-Angle, Half-Angle, and Power Reducing Identities

We proved the identites in 5.4 and we will spend two days
playing with them.

1/31 HW p.451/5-35 odd
2/01 HW p.451-452/39-47odd, 51-53

Sum and Difference Identities

We proved the sum and difference identities for the sine and cosine
functions. Tangent was left to you. We will spend two days playing
with these so you are comfortable with them.

1/27 HW p.444/1-29 odd, 31-34
1/30 HW p.444-445/33-43 odd,44,47,49,52,55,60,63-65,67

Proving Trig Identities

We will spend two days making sure we can prove trig
identities. The second day will include an exciting activity.

1/24 HW p.437-437/7-35 odd
1/25 HW p.438/37-47 odd, 48-59, 61

More with the Fundamental Identities

After playing our game with making obscuring expressions
that simplify to the basic trig functions, we have more homework.

p.430-431/35,38,41-53 odd,59,61,67,69-72

Fundamental Identities

We started looking at the fundamental identities for the trig
functions (section 5.1 in Demana). Know them.

p.430/1-29 odd, 31-34

Upcoming Test

Today we reviewed Inverses. The homework for tonight is
all from Brown:

p.271/7
p.279/16-18
p.290-291/15,17-21,30
p.349/28
p.354/23

Our test will be on Monday, January 23rd on
Demana 4.7 (Inverses) and Brown 9.1-9.4 (Law of Sines,
Law of Cosines, etc.). See also Demana 5.5 and 5.6 for extra
problems on the law of sines and law of cosines.

Law of Sines, Law of Cosines

Welcome back! We will ease back into school with the Law of Sines
and the Law of Cosines, some triangle trig rules that are very useful.
We will be using the Brown book for the next two weeks (at least).

1/04 Law of Sines HW: p.347-349/1-27 odd
1/06 Law of Cosines HW: p.352-354/1-17 odd, 22
1/09 Parent Conferences
1/10 HW Check, Mixed Apps HW: p.355-358/11,14,18,21,23,29,39,40
1/11 Mixed Apps HW: p.356-358/20,24,25,32,36-38
1/13 Mixed Apps HW: p.357-358/33-35,41-43

Two of problems 36-43 will be on the next test. Make sure you can do all of them.