vectors-m

Question: If $\vec{\lambda }$ is a unit vector perpendicular to plane of vector a and b and angle between them is $\theta$, then a . b will be

1) $|\mathbf{a}|\,\,|\mathbf{b}|\,\sin \theta \,\vec{\lambda }$

2) $|\mathbf{a}|\,\,|\mathbf{b}|\,\cos \,\,\theta \,\vec{\lambda }$

3) $|\mathbf{a}|\,\,|\mathbf{b}|\,\cos \,\,\theta \,$

4) $|\mathbf{a}|\,\,|\mathbf{b}|\,\sin \theta \,$

Solution:

Explanation: No Explanation

Scalar Product Dot Product

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