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Find the position vector of the mid point of the vector joining the points P (2, 3, 4) and Q (4, 1, – 2).

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Question

Find the position vector of the mid point of the vector joining the points P (2, 3, 4) and Q (4, 1, – 2).

Sum
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Solution

The midpoints measuring the points P(2, 3, 4), Q(4, 1, -2).

`vec("OR") = ((2hati + 3hatj + 4hatk) + (4hati + hatj - 2hatk))/2`

= `((2 + 4)hati + (3 + 1)hatj + (4 - 2)hatk)/2`

= `(6hati + 4hatj + 2hatk)/2`

`= 3hati + 2hatj + hatk`

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Chapter 10: Vector Algebra - Exercise 10.2 [Page 441]

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NCERT Mathematics Part 1 and 2 [English] Class 12
Chapter 10 Vector Algebra
Exercise 10.2 | Q 16. | Page 441

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