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29-03-2019
Mathematics

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Find the length of side BA. Round to the nearest hundredth.

A) .42

B) .65

C) .83

D) 1.25

Find the length of side BA Round to the nearest hundredth A 42 B 65 C 83 D 125 class=

Respuesta :

calculista calculista

07-04-2019

Answer:

Option A. [tex]0.42[/tex]

Step-by-step explanation:

we know that

Applying the law of cosines

[tex]BA^{2}=(1/2)^{2}+(1/3)^{2} -2(1/2)(1/3))cos(100)[/tex]

[tex]BA^{2}=0.1756[/tex]

[tex]BA=0.42[/tex]

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