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     EduGorilla 
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    In the adjoining figure, if BC = a, AC = b, AB = c and  CAB = 120°, then the correct relation is-

    Options :-

    1. a2 = b2 + c2 + 2bc

    2. a2 = b2 + c2 - 2bc

    3. a2 = b2 + c2 + bc

    4. a2 = b2 + c2 - bc

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Reply To: In the adjoining figure, if BC = a, AC = b, AB = c and  ∠CAB = 120°, then the corr….
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