Answer :

Wallind11

[tex] \frac{a}{8 \sqrt{2} } = \cos(45) [/tex]

[tex]a = \cos(45) \times 8 \sqrt{2} [/tex]

[tex]a = \frac{1}{ \sqrt{2} } \times 8 \sqrt{2} [/tex]

[tex]a = 8[/tex]

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