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Mathematics, 07.07.2021 14:00 alexsan5537

# If two vectors whose direction ratios are 1,2,3 and -k,2,1 are perpendicular to each other then, a) k=7 b) k=4 c) k=3 O d) k=6 me especially since we had be 1 poir 82) I don't know why he turned friends for so long.

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# If two vectors whose direction ratios are 1,2,3 and -k,2,1 are perpendicular to each other then, a...

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