Find equations for the tangent plane and the normal line at point Po (Xo.Yo.Zo) (1,2,0) on the surface - 8 cos (Tx) + 3x²y+ e xz +5yz = 15. Using a coefficient of 12 for x, the equation for the tangent plane is Find the equations for the normal line. Let x = 1 + 12t. x=, y=, z= (Type expressions using t as the variable.)

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A: Let's find.

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A: The given problem can be solved as follows:

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A: We can solve this as follows:

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