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4. Given y = 2i + 2j +7k, x= (-1,4,6), z=(3,-2,-3 A(-1,-3,5), B(-3,-2,4) Find: a) y. x b) the angle between x and z C

4. Given y = 2i + 2j +7k, x= (-1,4,6), z=(3,-2,-3 A(-1,-3,5), B(-3,-2,4) Find: a) y. x b) the angle between x and z C ) (2X - ) . (5x + J )

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