# Explain about all silver tea cups in trignometry

All Silver Tea Cups in trigonometry is basically an acronym of the sign convention of trigonometric ratio in the various quadrants.

$1^{st} quadrant - A \;means\;All\; trigonometric\; ratios\; are\; positive$
$2^{nd} quadrant-S\; means \; SIN \; and\; COSEC\; are\; positive\; all \; others\; are\; negative$
$3^{rd}\; quadrant - T\; means\; TAN\; and\; COT\; are \; positive\; all \; others\; are\; negative$
$4^{th} quadrant-\; C\; means \; COS \; and \; SEC\; are \; positive\; all\; others \; are \; negative.$

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