vectors-m

Question: If $\theta$ be the angle between the unit vectors a and b, then $\mathbf{a}-\sqrt{2}\,\mathbf{b}$ will be a unit vector if $\theta =$

1) $\frac{\pi }{6}$

2) $\frac{\pi }{4}$

3) $p\mathbf{i}+q\mathbf{j}+r\mathbf{k}$

4) $\frac{2\pi }{3}$

Solution:

Explanation: No Explanation

Scalar Product Dot Product

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