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Find the direction cosines for the vecto...

Find the direction cosines for the vector `veca=4hati+6hatj-5hatk`.

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The correct Answer is:
`4/sqrt(77),6/sqrt(77),(-5)/sqrt(77)`
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  9. Position coordinates of the points A, B,C are (1,2,3),(2,3,1) and (3,1...

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  13. Determine the angle between vecA=2hati-2hatj+hatk and vecB=3hati+hatj-...

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  14. If vecA=hati+4hatj+hatk and vecB=3hati-5hatj+hatk, find the unit vect...

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  15. Show that the vectors veca=3hati-2hatj+hatk, vecb=hati-3hatj+5hatk and...

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  17. Prove that |axxb|^2=a^2b^2-(a*b)^2.

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  19. Which vector is to be added with 3hati+4hatj-5hatk and hati-2hatj+7hat...

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  20. Find the direction cosines for the vector veca=4hati+6hatj-5hatk.

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