Question 920192
Write cot(t) in terms of sec(t) if the terminal point determined by t is in the second quadrant.

cot (t) =
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cot = cos/sin
cos = 1/sec
sin = sqrt(1 - cos^2) = sqrt(1 - 1/sec^2) = sqrt(sec^2-1)/sec
cot = 1/sec/(sqrt(sec^2-1)/sec)
{{{cot(t) = sqrt(sec^2(t)-1)/(sec^2(t) - 1)}}}
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cot is negative in Q2