alishacordova23 alishacordova23

10-07-2020
Mathematics

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bonathebrain bonathebrain

10-07-2020

Answer:

18

Step-by-step explanation:

x² = 16² + 30² - 2(16)(30)cos 30°

x² = 256 + 900 - 960(0.866)

x² = 1156 - 831.36

x² = 324.64

x = 18.02

Approx. 18

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10-07-2020

Answer:

18.01

Step-by-step explanation:

c^2=a^2+b^2-2abcos 30=

= 16^2+30^2-2(16)(30)(cos30) cos30=0.866

= 1156-480√3 = 324.6156

c=√324.6156=18.01

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