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If sin(A + B) = 1 and sin(A − B) = 1/2, where 0° ≤ A + B ≤ 90° and A > B, then:

Competition practiceTrigonometry
  • AA = 45°, B = 45°
  • BA = 60°, B = 30°
  • CA = 30°, B = 60°
  • DA = 75°, B = 15°

Step-by-Step Solution

° and °; adding gives ° so °, and then °.
Answer: B) A = 60°, B = 30°

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