# Graphing sine, need help

• January 24th 2007, 06:22 PM
zbrownleep7
Graphing sine, need help
Alright, my assingment is to use trig graph paper (which was given to us) and graph 0 to 360 degree's going by the special angles (30,45,60,90,120..etc).

I already know what the picture is going to look like:

http://img444.imageshack.us/img444/5810/sine1yb.th.png

We have to use the graph paper and mark exactly where 30 degree's would be and all the other special angles.

Can anyone help me understand what I'm graphing or how to graph it?

Appreciate any help before 7:00 am January 25th. :)
• January 24th 2007, 07:01 PM
ThePerfectHacker
Quote:

Originally Posted by zbrownleep7
Alright, my assingment is to use trig graph paper (which was given to us) and graph 0 to 360 degree's going by the special angles (30,45,60,90,120..etc).

I already know what the picture is going to look like:

http://img444.imageshack.us/img444/5810/sine1yb.th.png

We have to use the graph paper and mark exactly where 30 degree's would be and all the other special angles.

Can anyone help me understand what I'm graphing or how to graph it?

Appreciate any help before 7:00 am January 25th. :)

Take graph paper and mark of (make your own scale up) for the number of degrees.

Then you need to find $y=\sin x$.
You pick a point (one of the special ones) and find the sine of that.

For example, the important angles are: 0,30,45,60
Then, sin(0)=0, sin(30)=.5, sin(45)=.707, sin(60)=.866
And you create the point on the graph,
(0,0),(30,.5),(45,.707),(60,.866) and thus one.
And connect the dots.