Q1 of 177 Page 23

Find the magnitude of the vector

If a vector is given by then the magnitude of vector is generally denoted by which is equal to

So the magnitude






So the magnitude of the vector is 7.


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11

The position vectors of points A, B and C are and respectively. If C divides the lien segment joining A and B in the ratio 3 : 1, find the values of λ and μ.

 12

Find the components along the coordinate axes of the position vector of each of the following points –

i. P (3, 2)


ii. Q (5, 1)


iii. R (–11, –9)


iv. S (4, –3)

 2

Find the unit vector in the direction of

3

Find a unit vector in the direction of the resultant of the vectors and