Question

Anyone have some free time to help me refresh my memory on a couple of things?

Answer 1

depends on the things needing to be refreshed. at my age tings just roll about in a dense fog

Answer 2

Graphing sine and cosine is one of them.

Answer 3

they are just waves. cos(0) = 1 and sin(0) = 0 so their placement is just a shift

Answer 4

key points of interest tend to be at the 90s

Answer 5

I remember that much.

Answer 6

I'm about to take my placement test and I'm trying to remember the things I don't remember at the moment, but that I've learned.
That's one

Answer 7

It's so frustrating.

Answer 8

i good site for practice is interactmath.com

just hit enter, pick a book related to your study area, and practice away :)

Answer 9

you want pre calculus or trigonometry books

Answer 10

Thank you so much. Both, lol.

Answer 11

:) i use it when i want to refresh up on stuff

Answer 12

I don't know which book to use >.>