A) \[{{60}^{o}}\]
B) \[{{30}^{o}}\]
C) \[{{90}^{o}}\]
D) \[{{45}^{o}}\]
Correct Answer: B
Solution :
\[\Delta =\frac{1}{2}bc\sin A\Rightarrow 9=\frac{1}{2}.36\sin A\] Þ \[\sin A=\frac{1}{2}\Rightarrow A=\frac{\pi }{6}=30{}^\circ \].You need to login to perform this action.
You will be redirected in
3 sec