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1. △ABC

  • A. 105°
  • B. 105°
  • C. 105°
  • D. 105°

Answer: Option A

Explanation:

শর্তমতে, 

∠C = 180° - (∠A + ∠B)

= 180° - (45° + 30°)

= 180º - 75°

= 105°

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