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

User Dimuth Ruwantha
by
7.3k points

1 Answer

3 votes

9514 1404 393

Answer:

e ≈ 11.0

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

In ADEF, E = 52°, d = 14, and f = 9. Find e.-example-1
User Cactuschibre
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