First  Prev  1  2  Next  Last
HOMEWORK -_-
10694 cr points
Send Message: Send PM GB Post
25 / M / USA
Offline
Posted 2/18/09

RheBA wrote:


azn099 wrote:

i really doubt i'll get a good answer here but meh i'll try.

anybody have any easy ways to memorize trigonometric identities? double-angle and half-angle identities are the ones i haven't got down yet. i know the pythagorean relationships and sum/difference identities already.


if u know the additon formulae then double angle shud not b a prob...
eg. sin(A+B) = sinAcosB+cosAsinB
then the double formulae would b...
sin2A = sin (A+A)
= sinAcosA+cosAsinA
= 2sinAcosA
sumhow i doubt i'm helping...


i know that, and i would do that. however for part 1 of my math test we need to write all the identites in a limited amount of time, so writing out a proof like that would take me too long.

what i mean is a saying or something to help me remember it easier.
like for the pythagorean relationship
1+tan^2x=sec^2x
my teacher taught me "i love tangerine sections." it's kind of cheesy, but it helps me remember it easier.
16399 cr points
Send Message: Send PM GB Post
23 / F / Under your bed!!!...
Offline
Posted 2/18/09

Lavvy wrote:

Unless someone wants to give me 1000 words on how the British Empire shaped the formation of the Docklands, I'm not going to bother.

Especially since this board if full of 15 year olds.


Those 15 year olds may know something, you'd be surprised.

But I don't. My head exploded on some of the questions. Except that algebraic one.
13326 cr points
Send Message: Send PM GB Post
23 / M / Terra
Offline
Posted 2/18/09

cnw64 wrote:

-2x + 6 = 8x - 9

just kiddin no one answer that


x=1.5

lmfao....
68964 cr points
Send Message: Send PM GB Post
28 / M / VA
Offline
Posted 2/18/09

azn099 wrote:

i really doubt i'll get a good answer here but meh i'll try.

anybody have any easy ways to memorize trigonometric identities? double-angle and half-angle identities are the ones i haven't got down yet. i know the pythagorean relationships and sum/difference identities already.


out of curiosity, what class is this for? high school or college level?
4408 cr points
Send Message: Send PM GB Post
25 / M / Cavite, Philippines
Offline
Posted 2/18/09
one tip.... GOOGLE IT!!!!
277 cr points
Send Message: Send PM GB Post
M
Offline
Posted 2/18/09
Uh...came here to forget about homework.
Thanks for bringing me back to reality. xP
7895 cr points
Send Message: Send PM GB Post
21 / F / ~_
Offline
Posted 2/19/09
dont need any help regarding h0mew0rkS....
all th0se algebra stuff iS very easy...
10694 cr points
Send Message: Send PM GB Post
25 / M / USA
Offline
Posted 2/19/09

samuraikatana1 wrote:


azn099 wrote:

i really doubt i'll get a good answer here but meh i'll try.

anybody have any easy ways to memorize trigonometric identities? double-angle and half-angle identities are the ones i haven't got down yet. i know the pythagorean relationships and sum/difference identities already.


out of curiosity, what class is this for? high school or college level?


my pre-calculus class in high school.
68964 cr points
Send Message: Send PM GB Post
28 / M / VA
Offline
Posted 2/19/09

azn099 wrote:


samuraikatana1 wrote:


azn099 wrote:

i really doubt i'll get a good answer here but meh i'll try.

anybody have any easy ways to memorize trigonometric identities? double-angle and half-angle identities are the ones i haven't got down yet. i know the pythagorean relationships and sum/difference identities already.


out of curiosity, what class is this for? high school or college level?


my pre-calculus class in high school.


geez, good luck with that. i struggle with algebra .
Posted 2/20/09
I would gladly ask for help. If I'm not too lazy
11805 cr points
Send Message: Send PM GB Post
23 / F / Sιиgαρσяε
Offline
Posted 2/20/09
no~dun mention hw!
Posted 7/15/09
There's a General Help thread already. Post in there instead

~locked
First  Prev  1  2  Next  Last
You must be logged in to post.