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Elodia [21]
3 years ago
14

Identify ER rounded to the nearest tenth.

Mathematics
1 answer:
anzhelika [568]3 years ago
4 0

Answer:

ER ≈ 17.9

Step-by-step explanation:

Using the cosine ratio in the right triangle.

cos61° = \frac{adjacent}{hypotenuse} = \frac{ER}{MR} = \frac{ER}{37} ( multiply both sides by 37 )

37 × cos61° = ER, then

ER ≈ 17.9 ( to the nearest tenth )

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