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Find the magnitude of the vector 3hati+4...

Find the magnitude of the vector `3hati+4hatj+12hatk` and the angles it makes with x,y,z axes.

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The correct Answer is:
13; `cos^(-1)""3/(13), cos^(-1)""4/(13), cos^(-1)""(12)/(13)`
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CHHAYA PUBLICATION-VECTOR-PROBLEM SET-I
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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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  10. If vecA=5hati+3hatj-4hatk and vecB=5hati+2hatj+4hatk are two vectors, ...

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  11. Find the magnitudes of the sum and difference of two vectors 6hati-4ha...

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  12. Show that the magnitude of vecAxxvecB and area of a parallelogram of...

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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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  16. If the mid-points of the consecutive sides of any quan riateral are ...

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

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  18. Find the magnitude and direction of veca=3hati+4hatj. What are the co...

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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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