A) \[30{}^\circ \]
B) \[45{}^\circ \]
C) \[60{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: B
Solution :
[b] \[\frac{\sin \theta }{1}=\frac{\cos \theta }{1}=\frac{1}{\sqrt{2}}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\sin \theta =\frac{1}{\sqrt{2}},\,\,\cos \theta =\frac{1}{\sqrt{2}}\] |
\[\therefore \,\,\,\,\,\,\,\,\,\,\theta =45{}^\circ \] |
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