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Area of a triangle using ½ab sin C

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Learn it When you know two sides and the angle between them, Area = ½ × a × b × sin C. No height is needed.

Example: a = 9 cm, b = 14 cm, ∠C = 38°.

  1. Area = ½(9)(14) sin 38°.
  2. ≈ 38.8 cm².

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