A) \[{{210}^{o}},{{300}^{o}}\]
B) \[{{240}^{o}},{{300}^{o}}\]
C) \[{{210}^{o}},{{240}^{o}}\]
D) \[{{210}^{o}},{{330}^{o}}\]
Correct Answer: D
Solution :
\[\text{cosec }\theta +2=0\] \[\Rightarrow \] \[\sin \theta =-\frac{1}{2}\]\[\Rightarrow \] \[\theta =210{}^\circ \] or \[330{}^\circ \].
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