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Positive Trigonometric Functions in Each Quadrant


All Students Take Calculus

Each word of the mnemonic starts with the letter of the word that tells which trigonometric function(s) are positive in each quadrant of a graph (where the origin equals 0). Each letter stands for a trigonometric function (e.g. Students = Sine) except for the first quadrant, where conveniently "all" stands for "all."

1st quadrant -- All
2nd quadrant -- Sine
3rd quadrant -- Tangent
4th quadrant -- Cosine


Contributed by:
Jim Hall


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