A) \[\sin a\]
B) \[tan\text{ }a\]
C) \[cos\text{ }a\]
D) none of these
Correct Answer: C
Solution :
Here, \[OA=d\cos \alpha \] \[\therefore \] \[80\,A=g\,\cos \alpha \] \[\Rightarrow \] \[V_{A}^{2}=2g\cos \,\alpha \,\,d\,\cos \alpha \] and \[V_{B}^{2}=2gd\] \[\Rightarrow \] \[\frac{{{V}_{A}}}{{{V}_{B}}}=\cos \alpha \]You need to login to perform this action.
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