Question 1015307
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QI: all+
QII: sin+, csc+, others -
QIII: tan+, cot+, others -
QIV: cos+, sec+, others -

sec t > 0 and tan t < 0  sec+, tan-, QIV 
csc t > 0 and cot t < 0  csc+, cot-, QII
cos t < 0 and csc t < 0  cos-, csc-, QIII

Edwin</pre>