A Quick Review: The quadrants are labeled by 1,2,3, and 4 counterclockwise. Quadrant numbers/labels are typically written in Roman Numerals. A Few Things to Remember: In the first quadrant everything is positive. In the second quadrant cosine, secant, tangent, and cotangent are negative. Sine and cosecant are positive. In the third quadrant cosine, secant, sine,... Continue Reading →

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