February 25, 2017

Homework Help: Trigonometry

Posted by Ellyn on Sunday, January 24, 2010 at 6:51pm.

"Sketch the graph of y=tan(x/2)
By solving the equation x/2=-pi/2
x=- pi
and the equation x/2=pi/2

Before I go any further, I need to understand where these equations came from. Where does the pi come from out of thin air? What becomes of the tangent? Can you please explain why each step happens? That would be great, thanks.

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