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What is the length of the projection of the unit vector of the direction unit vector...

What is the length of the projection of the unit vector of the direction unit vector of the line x = 1 + 2t, y = 3-t, z = 5 + 2t overthe vector of the plane 2x + 3y-6z + 8 = 0? If your answer is a fraction write it in the abcd / efgh style (no spaces between what you write)
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