It turns out that arctan and cot are really separate things: cot(x) = 1/tan(x) , so cotangent is basically the reciprocal of a tangent, or, in other words, the multiplicative inverse. arctan(x) is the angle whose tangent is x.

Are arctan and tan 1 the same?

The inverse of tangent is denoted as Arctangent or on a calculator it will appear as atan or tan^-1. Note: this does NOT mean tangent raised to the negative one power.

Is arctan adjacent over opposite?

For example, if you know the hypotenuse and the side opposite the angle in question, you could use the inverse sine ratio. If you know the side opposite and the side adjacent to the angle in question, the inverse tangent ratio is used. ... Inverse tangent is also called arctangent and is labeled tan−1 or arctan.