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Line 2: ==Mathematical definition== [[Image:Magic angle.png\|thumb\|Magic angle\|250px\|right\|Magic angle]] The magic angle θ<sub>m</sub> is : <math> \theta_m = \rm{acos}\frac{1}{\sqrt{3}} = \rm{atan}\sqrt{2} \approx 54.7^\circ</math>, where acos (or cos<sup>-1</sup>) and atan (or tan<sup>-1</sup>) are the inverse cosine and tangent functions. θ<sub>m</sub> is the angle between the space diagonal of a cube and any of it's three connecting edges, see image. ==Magic angle and dipolar coupling==

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