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Sticky Note
tan²θ + 1 equals?
  1. cos²θ
  2. sec²θ
  3. cosec²θ
  4. None of these
Explanation

Using trigonometric identity:

tan²θ + 1 = sec²θ

So, tan²θ + 1 = sec²θ.


Last verified on 14-05-2026

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