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05-06-2020
Mathematics

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Can someone help me pls, I will really appreciate it

Can someone help me pls I will really appreciate it class=

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Ultroid Ultroid

05-06-2020

Use the law of cosines to find the missing length, which we'll call [tex]d:[/tex]

[tex]d^2=100^2+120^2-2(100)(120)\cos 45^\circ[/tex]

[tex]d^2=24400-12000\sqrt{2}[/tex]

[tex]\boxed{d\approx 86\text{ cm}}.[/tex]

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