Why Tan 90 degree is NOT DEFINED, Using Animation

Why is tan 90 undefined? - Quora

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Is tan 90 undefined or infinity? - Quora

Choose the correct option and justify your choice: (i) 2 tan 30°/1 + tan2 30° (A) sin 60° (B) cos 60° (C) tan 60° (D) sin 60° (ii) 1 - tan² 45°/1 + tan² 45° (A) tan 90° (B) 1 (C) sin 45° (D) 0°

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Is tan 90° equal to infinity? Isn't 1/0 undefined? - Quora

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Why tan(90) is undefined? Trigonometry Proofs / #maths

Why are sin90° and cos90° not undefined if tan90° is undefined? - Quora