Question 180552
Find 2 values of theta that satisfy cot(theta) = -0.2679 
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If cot(theta) = -0.2679, tan(theta) = -1/(0.2679)
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Use your calculator to find tan^-1(-1/0.2679))
I get -75 degrees.
The 2nd angle is -75-180 = -255 degrees
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The corresponding positive angles are:
-75 + 360 = 285 degrees
and 
-255 + 360 = 105 degrees
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Cheers,
Stan H.