Evaluate cot -220o

Question

Round your answer to the nearest hundredth.
A. -1.31
B. 1.56
C. -1.19
D. -0.84

Answer 1

-220 = 360 - 220 = 140
which is 180 - 40
which is 40 degrees above the -x axis in quadrant 2
tan and cot are negative in Q2
tan 40 = .839
so cot 40 = 1/.839 = 1.19
BUT it is negative so
-1.19 <------------

Answer 2

cot -220 = 1.19

what, your calculator doesn't do tan x in degrees?
cot x = 1/tan x