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OpenStudy (anonymous):

What is sec 210? Using a CAST diagram.

OpenStudy (anonymous):

The CAST diagram is also known as the quadrant diagram, hope someone can help please :)

OpenStudy (anonymous):

i don't know what these are, but you can find it by using the unit circle

OpenStudy (anonymous):

look at the unit circle on the last page of the attached cheat sheet find 210 degrees the first coordinate is cosine and the reciprocal of cosine is secant http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

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