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OpenStudy (anonymous):
What is the measure of the acute dihedral angle made by 3x + 2y - z = 1 and 4x + 3y - 6z = 6?
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jimthompson5910 (jim_thompson5910):
step 1) find the normal vectors for each plane step 2) find the angle between the normal vectors, this will will give you the angle between the two planes
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