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7 October, 01:32

Evaluate cot (-405°).

+1
Answers (1)
  1. 7 October, 03:13
    0
    hello : cot (-405°) = - 1

    Step-by-step explanation:

    cot (-405°) = - cot (405°) = - cot (360°+45°) = - cot (45°) = - 1
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