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Sticky Note
The value of cos² θ sec² θ is always?
  1. = 1
  2. ≥ 2
  3. < 1
  4. None of these
Explanation

Trigonometric Identity

Given: cos^2 θ sec^2 θ

Since sec θ = 1/cosθ,

cos^2 θ sec^2 θ = cos^2 θ . 1/cos^2 θ = 1.

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