A) 5
B) 6
C) 4
D) 3
Correct Answer: A
Solution :
\[n=\frac{{{360}^{o}}}{\theta }-1\] Given, \[\theta ={{60}^{o}}\] \[\Rightarrow \] \[n=\frac{{{360}^{o}}}{{{60}^{o}}}-1\] \[\Rightarrow \] \[n=6-1\,=5\]
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