Q. 15

# Write the vector of magnitude 15 units in the direction of vector

Answer :

|| = (1^{2} + ( - 2)^{2} + 2^{2})^{1/2}

⇒|| = (1 + 4 + 4)^{1/2} = (9)^{1/2} = 3

a unit vector in the direction of the sum of the vectors is given by:

a vector in the direction of which has magnitude 15 units.

= 15

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