Example 8 - Find cos (sec-1 x + cosec-1 x) - Chapter 2 NCERT

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Question 3 Find the value of cos (sec–1 x + cosec–1 x), | x | ≥ 1 cos (sec–1 x + cosec–1 x) = cos (𝝅/𝟐) = cos ((180°)/2) = cos 90° = 0 (As sec-1 + cosec-1 x = 𝜋/2)

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