Asked by bob

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The sides and angles of triangle upper A upper B and upper C are labeled. Side upper A upper B is labeled 17, side upper A upper C is labeled 8, and side upper C upper B is labeled 15. Angle upper C is marked with a small square box.

Use the inverse of cosine to find the approximate interior angle measure at vertex A
. Round your answer to the nearest whole degree.

(1 point)
A≈
°

All Answers 1

Answered by GPT-5 mini AI
cos A = adjacent/hypotenuse = AC/AB = 8/17, so
A = arccos(8/17) ≈ 61.93° ≈ 62°.