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Natali5045456 [20]
3 years ago
5

What is cos (x)? 48/58 58/48 26/58 58/26

Mathematics
1 answer:
Evgen [1.6K]3 years ago
8 0
<span>We have to calculate the length of the missing side.
Use the Pythagorean theorem:

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}

\cos x=\dfrac{6\sqrt{65}}{58}=\dfrac{3\sqrt{65}}{29}

I think. Your answers to choice are wrong.
</span>
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