Respuesta :


[tex] \sin(45) = \frac{7 \sqrt{2} }{2} \div x \\ x = \frac{7 \sqrt{2} }{2} \div \sin(45 ) \\ x = \frac{7 \sqrt{2} }{2} \times \frac{ \sqrt{2} }{2} \\ x = \frac{7 \times 2}{2} \\ x = 7 [/tex]
option with 7 as the answer is correct

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