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  9. Q86

RRB Technician (Grade I Signal + Grade III) 2024 · Question 86 of 1214

Simplify $\left(\frac{1}{\sin ^{2} \mathrm{~A}}-1\right)$, where $0<A\leq90$

best-effort

  1. A$\cot ^{2}A$
  2. B$\sec ^{2}A$
  3. C$\tan ^{2}A$Correct
  4. D$\cos ^{2}A$

Answer: C. $\tan ^{2}A$

Official answer key verified. Detailed explanation coming soon.

Source: RRB Technician Grade 1 2024 Questions: 20 Dec Shift 1 (9:00 AM - 10:30 AM) (testpaper.org compilation) · memory-based

← Q85View full paper (1214 questions)Q87 →

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