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Find the angle between the vectors -4i+3j+5k and 1i+3j+5k?A. 48 degreeB. 44.1 degreeC. 24.7 degreeD. 22.1 degree

POTU GANESH YADAV , 11 Years ago
Grade Upto college level
anser 3 Answers
BHUKYA ARUN KUMAR

Last Activity: 11 Years ago

48 degree

mallanna goud

Last Activity: 11 Years ago

dot product of given vectors=30

magnitudes of vectors -4i+3j+5k and1i+3j+5k are 7.07 , 5.92

7.07*5.92*cosa=30

cosa=30/7.07*5.92

cosa=30/41.85

cosa=0.7167

a=1/cos(0.7167)

a=44.1

treat as *=multiplication and a as angle

sumanth

Last Activity: 11 Years ago

44.1

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