Respuesta :

gmany
We have to calculate the length of the missing side.
Use the Pythagorean theorem:

[tex]a^2+32^2=58^2\\\\a^2+1024=3364\ \ \ |-1024\\\\a^2=2340\to a=\sqrt{2340}\\\\a=\sqrt{36\cdot65}\\\\a=6\sqrt{65}[/tex]

[tex]\cos x=\dfrac{6\sqrt{65}}{58}=\dfrac{3\sqrt{65}}{29}[/tex]

I think. Your answers to choice are wrong.

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