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Unformatted text preview: positive standard angle with the red terminal side is a Quadrant I angle: A standard angle whose terminal side lies on the x- or y-axis is called a quadrantal angle . Quadrantal angles correspond to integer multiples of 90 or 2 radians. The quadrants and some quadrantal angles: (For convenience, we may label a standard angle by labeling its terminal side.)...
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- Fall '10