In the xy-plane, O is the center of the circle, and the measure of POQ is a.

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In the xy-plane, O is the center of the circle, and the measure of ∠POQ is a°.imageWhat is the cosine of (a + 180)°?image

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Acing The New SAT Math

ISBN: 9780975475355

1st Edition

Authors: Thomas Hyun

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