Mathematics · Trigonometry

In triangle ABC, lengths of sides opposite to respective angles are a = 25, b = 45, and c = 30, then the value of cos A is:

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In triangle ABC, lengths of sides opposite to respective angles are a = 25, b = 45, and c = 30, then the value of cos A is:

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In triangle ABC, lengths of sides opposite to respective angles are a = 25, b = 45, and c = 30, then the value of cos A is:

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