Verified Answer :

now... notice the picture

now, how many units in the adjacent side,
and how many in the opposite side

let us notice is a right-triangle, thus

\(\bf tan(\theta)=\cfrac{opposite}{adjacent}\implies \theta=tan^{-1}\left( \cfrac{opposite}{adjacent} \right)\\\\ -----------------------------\\\\ thus \\\\ tan(N)=tan(\theta)=\cfrac{opposite}{adjacent}\implies \measuredangle N==tan^{-1}\left( \cfrac{opposite}{adjacent} \right)\)

when taking the tangent, make sure your calculator is in Degree mode, since you're asked to give angle N in degrees

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