shaniaG shaniaG

25-03-2021
Mathematics

contestada

In ADEF, E = 52°, d = 14, and f = 9. Find e.

Respuesta :

sqdancefan sqdancefan

26-03-2021

9514 1404 393

Answer:

e ≈ 11.0

Step-by-step explanation:

The law of cosines tells you ...

e² = d² +f² -2df·cos(E)

e² = 196 +81 -252cos(52°) ≈ 121.853

e ≈ √121.853 ≈ 11.04

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