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What does cot mean in mathematics and how to use it?
Cot is the symbol of cotangent trigonometric function in trigonometric function, which was previously written as ctg. Cot coordinate system indicates: cotθ=x/y, cotθ=cosθ/sinθ in trigonometric function, θ=kπ, cotθ =1/tan θ in k∈Z (θ = kπ, cotθ=0 in k∈Z).
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