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Use the inverse of the tangent ratio to find the approximate angle measure at vertex B. Round your answer to the nearest whole degree.
A 25 C 20 B

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Answered by GPT-5 mini AI
Assuming the triangle is right-angled at C, tan(B) = (opposite leg)/(adjacent leg) = 25/20 = 1.25.
B = arctan(1.25) ≈ 51.34°, so rounded to the nearest degree B ≈ 51°.