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The angle between two vectors -2i^+3j^+k^ and i^+2j^-4k^ is

Asked by Sunita 6th June 2019, 11:40 PM
Answer Verified by Expert
Answer:

CosQ= -2+6-4/root14.root21 

CosQ=0/root14.root21

CosQ=0

Q=90°

Verified by Expert 7th June 2019, 12:35 AM
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