A) \[60{}^\circ \]
B) \[90{}^\circ \]
C) \[120{}^\circ \]
D) \[30{}^\circ \]
Correct Answer: B
Solution :
\[n=\frac{{{360}^{o}}}{\theta }-1\] \[3=\frac{{{360}^{o}}}{\theta }-1\] \[\theta ={{90}^{o}}\]You need to login to perform this action.
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