electronia
17.06.2021 •
Mathematics
Quadrilateral ABCD~ Quadrilateral LMNO The perimeter of quadrilateral ABCD is 640. The perimeter of quadrilateral LMNO is 144. What is LM?
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Ответ:
9514 1404 393
4°48°Step-by-step explanation:
The inverse cosine function of your calculator is used to find the angle from the cosine value. (Be sure your calculator is set to 'degrees' mode.)
1) A = arccos(0.9976) ≈ 4°
2) U = arccos(0.6691) ≈ 48°