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SSC CPO 2025 PYQ — Question 141

SSC CPO - 9 Dec 2025 - Shift 2 • Quantitative Aptitude • Q141

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Sec A =13/12 . If  A is acute angle, find sin(90° − A) .

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Correct answer: B

Explanation

secA = 13/12

According to the formula:

sin(90° − A) = cosA

secA = 1/cosA

cosA = 12/13

sin(90° − A) = 12/13