SOLUTION: Please explain how I would find the trig function/equation for the graphs below http://i.imgur.com/oduhK69.png Thank you

Question 923295: Please explain how I would find the trig function/equation for the graphs below
http://i.imgur.com/oduhK69.png
Thank you
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Please explain how I would find the trig function/equation for the graphs below
http://i.imgur.com/oduhK69.png
-----------
The left side:
It's a sinusoid.
Amplitude = 0.3
It crosses the x-axis at 5pi/2 and 9pi/2 --> 2pi is 1/2 cycle
--> period = 4pi
------------
The 1st crossing of the x-axis x > 0 is pi/2 --> phase shift of -pi/2
--> y = 0.3*sin((x - pi/2)/2)
=================================
The 2nd one:
Period = 2pi
Min/max = -2/+2
--> y = 2csc(x)
==============================
dl the FREE graph software at
http://www.padowan.dk
to make graphs for comparison
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