A) \[30{}^\circ \]
B) \[60{}^\circ \]
C) \[90{}^\circ \]
D) none of these
Correct Answer: A
Solution :
\[1\,\times \,\,sin\text{ }45\,\,=\,\,\sqrt{2}\text{ }sin\text{ }r\] \[\sin \,\,r\,\,=\,\,\frac{1}{\sqrt{2}}\,\,\Rightarrow \,\,r\,\,=\,\,30{}^\circ \]You need to login to perform this action.
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