It means the following:
1. All = All the trigonometric ratios are positive in the first quadrant.
2. Silver = Only the Sine trigonometric ratio is positive in the second quadrant. Rest are negative.
3. Tea = Only the Tangent trigonometric ratio is positive in the third quadrant. " " .
4. Cups = Only the Cosine trigonometric ratio is positive in the fourth quadrant. " " .
my friend....! this is used in the quadrant system of trigonometry
actually it is all silver tea cups
all denotes that all trigonometric ratios are positive
silver denotes that onle trigonometric ratios of sine are positive
tea denotes that trigonometric ratios of tan are positive
cups denote that trigo. ratios of cos are positive in this quadrant.
First of all it is not SILVER ALL TEA CUPS but ALL SILVER TEA CUPS
ALL-It means all SIN,COS,TAN,COSEC,SEC,COT are positive in first quodrant
SILVER-It means SIN,COSEC are positive in second quodrant
TEA-It means TAN,COT are positive in third quodrant
CUPS-It means COS,SEC are positive in fourth quodrant
If you are fan of cricket you can also say as ALL SACHIN TENDULKAR CENTURIES