5.4 – Sum & Diff Formulas
Dec 7th, 2010 by corricelli
Hello!
Please use this section to post questions/concerns/reflections on Chapter 5, Section 4.
Happy Blogging,
Mrs. Corricelli
6 Responses to “5.4 – Sum & Diff Formulas”
Leave a Reply
Categories
- Algebra II (57)
- AP Comp Sci (3)
- Geometry (47)
- Math Talk (15)
- Motivational (6)
- Updates (91)
Get updates immediately!
Completely spam free, opt out any time.
Recent Comments
- corricelli on 11.1 – 11.3: Polygon Basics
- Sean W. on Geometry Videos & Links
- Katie Berry on 11.1 – 11.3: Polygon Basics
- Patrick on Earth is not a Sphere. What?!
- Patrick on 9.5 – Trig Ratios
help 77! no comprendo.
jk i got it….. but 99 i completely do not understand
Hey Rachel, I don’t think we had to do number 99 for tonight’s homework.(hope im right)…unless of course you’re just doing additional practice
The hw probs i have written down are 43, 45, 57, 61, 63, 65, 71, 73, 77, 79, 105…
Can anyone explain the last few steps to problem num. 79?
Mawra and Rachel,
Problems assigned were: 43,57,61,63,65,71,73,77,79,105…
(Not 99).
Take care,
Mrs. Corricelli
Mawra,
With 79, you use the sin(u+v) and sin(u-v) formulas and the values of sin(pi/6) and sin(-pi/6) to expand out both. Then some parts cancel and you should be left with something that is recognizable…
Happy Monday!
Mrs. Corricelli
can anyone help me with number 73 on the ch 5 review? it’s a 5.4 question so I thought it was relevant.
I can’t prove the identity! I think I’m doing it wrong because i keep getting a no solution for part of the equation when i try doing it out. help is greatly appreciated!