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प्रश्न
Select the correct option from the given alternatives:
In ΔABC, ac cos B - bc cos A = _______
पर्याय
a2 - b2
b2 - c2
c2 - a2
a2 - b2 - c2
उत्तर
In ΔABC, ac cos B - bc cos A = a2 - b2.
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