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Answered

PLEASE HELP ASAP I WILL GIVE BRAINLIEST!!!
Find the value of x.
Round to the nearest tenth.
х
3
120°
10
x = [?]
Law of Cosines: c2 = a2 + b2 - 2ab cos C
Enter

PLEASE HELP ASAP I WILL GIVE BRAINLIEST Find The Value Of X Round To The Nearest Tenth Х 3 120 10 X Law Of Cosines C2 A2 B2 2ab Cos C Enter class=

Answer :

CLARCH19GO

Answer:

x = 11.8

Step-by-step explanation:

x² = 3² + 10² - 2(3)(10) · cos120°

x² = 109 - (60 · cos120°)

x² = 109 - (-30)

x² = 139

x = [tex]\sqrt{139}[/tex] ≈ 11.8

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