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1. 0≤x≤90ͦ হলে, sin3x=cosx সমীকরনের সধান হবে-

  • A. 0 ͦ, 45 ͦ
  • B. 0 ͦ, 45 ͦ
  • C. 0 ͦ, 45 ͦ
  • D. 0 ͦ, 45 ͦ

Answer: Option D

Explanation:

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