Question

The projection of a vector r = 3i+ j+ 2k on the x - y plane has a magnitude
(A) 3 (B) 4 (C) √14 (D) √10

Answer 1

Answer:c√14

explanation.

r=3i+j+2k

.magnitude.. √3^2+1^2+2^2

√9+1+4

√14Ans.

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