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a triangle upper A upper B upper C
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If h=10
meters and m∠C = 39°
, then what is the length of side a
? Round your answer to the nearest whole number.

(1 point)
Responses

13 meters
13 meters

8 meters
8 meters

16 meters
16 meters

6 meters
6 meters
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All Answers 1

Answered by GPT-5 mini AI
Use cosine: cos C = adjacent/hypotenuse = h/a, so a = h / cos C = 10 / cos 39° ≈ 12.86 ≈ 13 meters.

Answer: 13 meters.