Question 921046
Suppose cos t = -0.4 and csc t < 0 . Find each of the following
sin t =
tan t =
csc t =
sec t =
cot t = 
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Given data shows reference angle t is in quadrant III in which cos<0, sin<0
cos t=-0.4=-4/10=-2/5
sin t=-&#8730;(1-cos^2t)=-&#8730;(1-4/25)=-&#8730;(21/25)=-&#8730;21/5
tan t=sin/cos=-&#8730;21/-2=&#8730;21/2
sec t=-5/2
csc t=-5/&#8730;21=-5&#8730;21/21