Answer:
A
Step-by-step explanation:
We can use Pythagorean theorem to solve.
[tex]a^2+b^2=c^2[/tex]
We are solving for a
[tex]a=\sqrt{c^2-b^2}[/tex]
[tex]a = \sqrt{10^2-6^2}=\sqrt{100-36} =\sqrt{64}=8[/tex]
Therefore the answer is 8 which is answer A
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