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Please have simplified work and label your answers. Do not use ChatGPT or any Ai. Handwritten work only. Will rate aswell Let a = (-1,

Please have simplified work and label your answers. Do not use ChatGPT or any Ai. Handwritten work only. Will rate aswell

Let a = (-1, 3, -4) and b = (-4, 2, 3). Find the angle between the vector 1) The exact angle is cos 2) The approximation in radians is

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