Question

IMPORTANT, PLEASE MAJOR HELP NEEDED!!!
TRIGONOMETRY RVW.
PLEASE IF YOU KNOW THIS STAFF!

Answer 1

@kiergurl5, there you go!

@myininaya @Zarkon @robtobey @timo86m IMPORTANT!!!!

Answer 2

Thanks so much, @SolomonZelman! :)

Answer 3

@kiergurl5, ask questions about specific concepts, I;ll find and msg other helpers.

Answer 4

ok

Answer 5

Do you know the basics about the circles parabolas and hyperbolas?

Answer 6

kind of... not completly

Answer 7

lets start with circles.\[(x-h)^2+(y-k)^2=r^2\]\[(h,k)~~~~~~~~is~~the~~center.\]\[r~~~~~~~~is~~~the~~radius.\]

Answer 8

can you write the equation for this circle?

Answer 9

ummm.....

Answer 10

(I won't always be available, But I want to make sure the user gets help needed)

@kiergurl5, try you can do it, compare to the formula.

Answer 11

(0,0) is the center... so...\[(3-0)^{2}+(3-0)^{2}=r^2\]

Answer 12

maybe?

Answer 13

ok... 18=r^2

Answer 14

\[\sqrt{18}=r\]

Answer 15

Hold on, I mis-understood what you wrote, y and x remain the same,

Answer 16

\[(x-0)^2+(y-0)^2=3^2\]\[(x)^2+(y)^2=3^2\]\[x^2+y^2=3^2\]\[x^2+y^2=9\]

Answer 17

I am not substituting 3 for x and y, I am substituting 3 for r.

Answer 18

UNDERSTAND?

Answer 19

so i just did it backwards?

Answer 20

You plugged in 3 for x and y,. but you are/were supposed to lug in 3 for r and (0,0) for (h,k)

Answer 21

Ohhh....

Answer 22

Lets do more examples.

Answer 23

ok

Answer 24

A little trickier....