Tangents And Tables

Geometry Level 1

\[ \tan 25^\circ \qquad \tan 35^\circ \qquad \tan 45^\circ \qquad \tan55^\circ \qquad \tan 65^\circ \]

The above shows 5 numbers. The reciprocal of each of these numbers is equal to another number in this list, except for one. Which one?

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