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Mathematics, 03.07.2019 16:20 rustalex6045
Find the cosine of the angle between the planes −1x+3y+1z=0 and the plane 5x+5y+4z=−4
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Find the cosine of the angle between the planes −1x+3y+1z=0 and the plane 5x+5y+4z=−4...
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