1 and cot are symbols of cotangent trigonometric functions.

2.COT is the abbreviation of the first letter of Careeroriented Training, and translated into Chinese is vocational-oriented training.

3.COT is the abbreviation of Commitment of Traders, which belongs to the concept of financial field and literally translates as "position report".

4.COT is a point-based cross-country championship for all car enthusiasts, and it is also a diversified mass sports activity with social attributes.

Cot coordinate system representation of extended data: cotθ=x/y, cotθ=cosθ/sinθ in trigonometric function, cotθ= 1/tanθ when θ=kπ, k∈Z (cotθ does not exist when θ = kπ, k∈Z). The adjacent side of angle a is the opposite side of angle a.

Put an angle into a rectangular coordinate system, so that the starting edge of the angle coincides with the non-negative semi-axis of the X axis, and find a point A(x, y) on the final edge of the angle. If the angle passes through A and is perpendicular to the X axis, then R = (x 2+y 2) (1/2), and cotθ=x/y cotangent has no maximum.

Baidu Encyclopedia -—cot (Cotangent Function)