arctan 2 = ?

The arctangent is the inverse tangent function.

Since

tan 1.107 = tan 63.435º = 2

The arctangent of 2 is equal to the inverse tangent function of 2, which is equal to 1.107 radians or 63.435 degrees:

arctan 2 = tan^{-1} 2 = 1.107 rad = 63.435º

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