Asked by tiana
Evaluate cot -220o
Round your answer to the nearest hundredth.
A. -1.31
B. 1.56
C. -1.19
D. -0.84
Round your answer to the nearest hundredth.
A. -1.31
B. 1.56
C. -1.19
D. -0.84
Answers
Answered by
Damon
-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 <------------
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 <------------
Answered by
Steve
cot -220 = 1.19
what, your calculator doesn't do tan x in degrees?
cot x = 1/tan x
what, your calculator doesn't do tan x in degrees?
cot x = 1/tan x
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