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OpenStudy (anonymous):
Suppose a triangle has sides a, b, and c. Let theta be the angle opposite the side of length b. If cos theta > 0, what must be true? A. a^2 + b^2 = c^2 B. a^2 + c^2 > b^2 C. a^2 + c^2 < b^2 D. a^2 + b^2 > c^2
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