Question 614432
Find Tan pheta if sec pheta= 5/2 and 270 degrees is less than or equal to pheta which is less than or equal to 360 degrees
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First time I've seen pheta.  It's probably theta, a Greek letter.
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sec(p) = 5/2, 270 <= p <= 360
cos(p) = 2/5
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{{{sin(p) = sqrt(1 - cos^2(p)) = sqrt(21)/5}}}
tan(p) = sin/cos = sqrt(21)/2
In Q4 --> -sqrt(21)/2