We are given that $\cos{0} = -\frac{25}{x}$, where $x$ is the hypotenuse of the right triangle formed by the angle 0.
Now, we can use the Pythagorean identity $\sin^2{0} + \cos^2{0} = 1$ to find the sine of 0.
$\sin^2{0} + (-\frac{25}{x})^2 = 1$
$\sin^2{0} +
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