Answer:
hello : cot(-405°) = - 1
Step-by-step explanation:
cot(-405°) = - cot(405°) = - cot(360°+45°) = - cot(45°) = - 1
cotangent = reciprocal tangent
405-360 (above quadrant IV, just pretend it keeps going... each quadrant is worth 90 degrees) = 45
-tan(45)= -1
reciprocal of -1 divided by 1
-1/1 = -1
-1 is your answer
