A) \[36{}^\circ \]
B) \[144{}^\circ \]
C) \[180{}^\circ \]
D) \[150{}^\circ \]
Correct Answer: B
Solution :
Let the required angle be 9 \[\therefore \] Supplementary angle \[={{180}^{o}}-\theta \] \[\therefore \] \[\theta =4\times ({{180}^{o}}-\theta )\] \[\Rightarrow \] \[5\theta ={{720}^{o}}\] \[\therefore \] \[\theta ={{144}^{o}}\]
You need to login to perform this action.
You will be redirected in
3 sec
