Question

WHO WANTS A MEDAL OR A NEW FAN :) ??? ALGEBRA 2 HELP PLEASE! graph the function in the interval from 0 to 2pi. y=sin(0-2)

Answer 1

hello?

Answer 2

So you have, y = sin (theta - 2)

To graph from 0 to 2pi, they basically want you to plug-in values to the theta symbol to solve for y and use the answer along with that variable you plugged-in to plot points on a graph.
The answer to whatever sin(theta-2) equals will always be your y value.
X is the value you are plugging into the y equation.

Ex: If theta = 0 ........ then y = sin (0 - 2)........ y = sin (-2) = -0.03 radians

So your very first point to plot on the graph would be (0, -0.03 radian)
theta in this case is your x and = 0, and the answer -0.03 radian is your y value

Next you will choose 3-5 additional theta values that fall within the range they want you to plot (0-2pi), making the theta = 2pi be your last point. I would try theta values of 60, 120, 210, and 330 degrees. Wasn't sure if you had learned the unit circle yet,so that is why they are in degrees instead of pi values.

Does this make sense and/or help? Just let me know

Answer 3

Yes this is very helpful! I Appreciate it so much! you explained VERY well!!! Just one thing… Im not able to see what you said visually? do you think you could graph it :)

Answer 4

Sure, have you learned about x and y coordinates yet?

Answer 5

yes, sorta

Answer 6

okay ill try to do this as best I can typing it out, give me a few

Answer 7

ok:)

Answer 8

Have you learned the unit circle yet?

Answer 9

those are my choices

Answer 10

no :(

Answer 11

Ahh got it, okay well the unit circle is just a damn circle the broke up into a bunch of sections and its basically fancy math way to describe degrees of a circle but it correlates to everything later but just think of a normal circle with points where N, S, E, W usually are

Answer 12

oh I think I've seen that!

Answer 13

E is 0, N is 90 degrees or also called pi/2, W is 180 degrees or pi, S is 270 degrees or 3pi/2 and coming back around to E, it will also be 2pi or 360 degrees to complete the circle.

Answer 14

OOOHHHHHHHH AHA!

Answer 15

So that's why the graph looks like a wave because the sin of those values minus 2, produces a specific shaped wave that means all sorts of crazy pellet in the math world

Answer 16

i meant crazy pellet lol

Answer 17

i guess the site wont let you cuss haha

Answer 18

hahaha, Is it C? the 3rd one?

Answer 19

oh let me look

Answer 20

ok :)

Answer 21

I think its B

Answer 22

After promising testimonials you never write them. @megangentry1158

Answer 23

do you have a graphing calculator?

Answer 24

Here's a link to the graph
http://www.wolframalpha.com/input/?i=y+%3D+sin%28theta+-+2%29

Answer 25

ahhh i totally forgot! I am so sorry :(

Answer 26

that was to ^ @Isaiah.Feynman

Answer 27

and @tophat36 , no i don't have a calculator :/

Answer 28

See the link I added above so you can see the graph, that's the best math website hands down to get answers, but here's a great site I use to teach myself and he has an algebra section
http://tutorial.math.lamar.edu/Classes/Alg/Alg.aspx

Answer 29

Your awesome ! think you could help with one more ?