Find the angles which the following vectors, makes form the co-ordinates axes : (i) `2hati+hatj+3hatk` , (ii) `3hati-4hatj+5hatk`
Find the angles which the following vectors, makes form the co-ordinates axes :
(i) `2hati+hatj+3hatk` , (ii) `3hati-4hatj+5hatk`
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Correct Answer - (i) `cos^(-1)(2/(sqrt(14))), cos^(-1)(1/(sqrt(14))), cos^(-1)((3)/(sqrt(14)))` , (ii) `cos^(-1)((3)/(5sqrt(2))), cos^(-1)((-4)/(5sqrt(2))), (pi)/(4)`
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