Suppose that the point $\left(\rho,\theta,\phi \right)=\left( 12, \frac{2 \pi}{3}, \frac{\pi}{4} \right)$ in spherical coordinates can be expressed as $(x, y, z)$ in rectangular coordinates.  Find $x+z$.
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Suppose that the point $\left(\rho,\theta,\phi \right)=\left( 12, \frac{2 \pi}{3}, \frac{\pi}{4} \right)$ in spherical coordinates can be expressed as $(x, y, z)$ in rectangular coordinates.  Find $x+z$.
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user
3\sqrt{2}
Suppose that the point $\left(\rho,\theta,\phi \right)=\left( 12, \frac{2 \pi}{3}, \frac{\pi}{4} \right)$ in spherical coordinates can be expressed as $(x, y, z)$ in rectangular coordinates.  Find $x+z$.
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