justinsanders6734 justinsanders6734

11-06-2022
Mathematics

contestada

Find the value of x.
Round to the nearest tenth.
C
31°
x = [?]
26
А.
B
X
Law of Cosines: c² = a² + b² - 2ab cos C
19

Find the value of x Round to the nearest tenth C 31 x 26 А B X Law of Cosines c a b 2ab cos C 19 class=

Respuesta :

11-06-2022

Answer:

Hi,

Step-by-step explanation:

Using Al'Kashi theorem (law of cosines),

x²=26²+19²-2*26*19*cos(31°)

x²= 190,11870690...

So

[tex]x=\sqrt{190.11870690} =13,7883540...\approx{13.8}[/tex]

I hope that this is not a control.

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