document.write( "Question 194801: I'm trying to plot points on a graph. the problem is y=3sec4x. I have all the points but one. I'm stuck at 5 pi/2. I have no idea how to find this on the unit circle. Explain plz? \n" ); document.write( "

Algebra.Com's Answer #146129 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "From the positive x-axis to the positive y-axis:

, then from the positive y-axis to the negative x-axis another

for a total of

. Then one more quarter circle,

. All the way back to the beginning:

. Yep,

is the same thing as

. In fact, all angles of the form

are the same angle

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