Question: Write the vector v = ( 7 , 8 , 5 ) as the sum of two vectors. One vector which is parallel to (

Write the vector v =(7,8,5) as the sum of two vectors. One vector which is parallel to (1,2,1), and one which is perpendicular to (1,2,1).
Find the area of the triangle formed by the vectors you just found.

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