secA+tanA = 5/2 হলে secA-tanA = ?

secA+tanA = 5/2 হলে secA-tanA = ?

  1. a) 1/2
  2. b) 1/5
  3. c) 2/5
  4. d) 5/2

From the PGCB Assistant Engineer (CSE) April 2024 – Preliminary (BUET) exam, question 3 of 79.

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