Question

what expression is equivelent to sin(inverse tan x)?

Answer 1

Let \(\tan^{-1} x= t\). Then \(\tan t= x/1\). So we have a triangle with sides \(x,1\). The hypothenuse is \(\sqrt{x^2+1}\).
Therefore \(\sin t =\frac{x}{\sqrt{x^2+1}}\)

Answer 2

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Answer 3

How can you have two different avatars?

Answer 4

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