Mnemonic Device:
- All Students Take Calculus
Explanation: In quadrant I, ALL trigonometric functions are positive; in quadrant II, only Sine is positive; in quadrant III, only Tangent is positive; and in quadrant IV, only Cosine is.
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Mnemonic Device:
Explanation: In quadrant I, ALL trigonometric functions are positive; in quadrant II, only Sine is positive; in quadrant III, only Tangent is positive; and in quadrant IV, only Cosine is.
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