Question

find cos theta if sin theta = 2/3 and it falls in quadrant 2. Please help me graph this I NEED HELP ASAP

Answer 1

\(\cos^{2}(x) + \sin^{2}(x) = 1\)

Most of the rest is algebra!

Answer 2

I need help graping it

Answer 3

Why are you graphing it?

Answer 4

project for trig

Answer 5

Mega Man?

Answer 6

what do you mean mega man?

Answer 7

I just thought that's what it looked like.

http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/en/thumb/f/f7/Mega_Man_(Mega_Man_9).png/175px-Mega_Man_(Mega_Man_9).png&imgrefurl=http://en.wikipedia.org/wiki/Mega_Man_(character)&h=200&w=175&sz=30&tbnid=9x6Fd12ZaJNGYM:&tbnh=90&tbnw=79&zoom=1&usg=__qE0eiATioaW-lJHSlzmqzLRgOyM=&docid=XMxYmYN9hI4CpM&sa=X&ei=4DH_UeyqDY3lygHFpoDoBQ&ved=0CEYQ9QEwBA&dur=3261

Answer 8

lol okay(:

Answer 9

so i need to write the steps to solve this... can you help?

Answer 10

Go look at my first post. That is an important first step.
Substitute the known value.
Solve for the remaining value.
Decide which one is the right one.

Answer 11

i need to get this done for tomorrow please

Answer 12

I just told you how to do it. I'm not going to do it for you. Start writing!

Answer 13

can you figure out what ? is

Answer 14

im not good at this stuff @zzr0ck3r

Answer 15

walk me through it @zzr0ck3r

Answer 16

a^2+b^2=c^2

Answer 17

you know what b and c are so find a

Answer 18

so subtract 3-2=1

Answer 19

@zzr0ck3r

Answer 20

?

Answer 21

x^2+2^2=3^2
what is x?

Answer 22

x= + or - sqrt 5

Answer 23

@zzr0ck3r

Answer 24

ok

Answer 25

is this right @dumbcow \[\sqrt{5}^{2}+2^2=3^2?\]

Answer 26

soh
cah
toa

Answer 27

have you heard of soh cah toa?

Answer 28

yes i have

Answer 29

yes that is right

Answer 30

thanks @dumbcow

Answer 31

I dont think your post showed up @zzr0ck3r

Answer 32

@dumbcow how do i set it up bro?

Answer 33

@dumbcow can you finish this, I am on the phone and I think he is in a hurry

Answer 34

I just need the soh cah toa forumla and i'll be okay

Answer 35

can you give that to me @zzr0ck3r ?

Answer 36

or @dumbcow

Answer 37

oops i got caught up with another post

ok SOH CAH TOA

sin (angle) = opp/hyp
cos(angle) = adj/hyp
tan(angle) = opp/adj

Answer 38

alright so then i have the problem find sin theta if tan theta = 1/7. how does that set up?

Answer 39

tan = opp/adj

--> opp = 1
--> adj = 7

sin = opp/hyp