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Question

Suppose the area of the ΔABC is 103. Length of segments AC and AB be 5 and 8 respectively. Then the angle A is (are)  :
  1. 45 or 135
  2. 30 or 150
  3. 90 
  4. 60 or 120


Solution

The correct option is D 60 or 120
Area of the triangle
=12×8×5sinθ=103 
sinθ=32θ=60 or 120

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