A) \[|\mathbf{a}|\,\,|\mathbf{b}|\,\sin \theta \,\vec{\lambda }\]
B) \[|\mathbf{a}|\,\,|\mathbf{b}|\,\cos \,\,\theta \,\vec{\lambda }\]
C) \[|\mathbf{a}|\,\,|\mathbf{b}|\,\cos \,\,\theta \,\]
D) \[|\mathbf{a}|\,\,|\mathbf{b}|\,\sin \theta \,\]
Correct Answer: C
Solution :
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