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3 years ago

Help with this math problem

Mathematics

1 answer:

myrzilka [38]3 years ago

5 0

${a}^{2} + {b}^{2} = {c}^{2} \\ ({ \sqrt{47} })^{2} + {b}^{2} = ({10)}^{2} \\ 47 + {b}^{2} = 100 \\ {b}^{2} = 100 - 47 \\ {b}^{2} = 53 \\ b = \sqrt{53}$

_o_o_

cos k = adjacent / hypotenuse

$\cos(k) = \frac{ \sqrt{53} }{10}$

I hope I helped you^_^

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