There's going to be a lot to remember for the GMAT exam math section - circles/trigonometry are all fair game. You won't see advanced calculus concepts such as secant/tangent/sine/cosine, etc.
All basic concepts of math will be covered:
Parallel Lines and Angles
Sum of Sequences
... and more
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Zeke Lee, GMAT Pill Study Method (Study Less. Score More.)
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