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(i) Find the sum of vectors veca=hati-2h...

(i) Find the sum of vectors `veca=hati-2hatj+hatk , vecb=-2hati+4hatj+5hatk`, and `vecc=hati-hatj-7hatk` (ii) Find the magnitude of the vector `veca=3hati-2hatj+6hatk`.

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AAKASH INSTITUTE ENGLISH-VECTOR ALGEBRA-TRY YOURSELF
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