A) \[\frac{1}{36}\]
B) \[\frac{1}{32}\]
C) \[\frac{1}{18}\]
D) \[\frac{1}{16}\]
Correct Answer: D
Solution :
\[\left( sin\text{ }10{}^\text{o}\text{ }sin\text{ }30{}^\text{o}\text{ }sin\text{ }70{}^\text{o} \right)\text{ }sin\text{ }30{}^\text{o}\] \[\frac{1}{4}{{\left( sin\text{ }30{}^\text{o} \right)}^{2}}=\frac{1}{4}.\frac{1}{4}=\frac{1}{16}\]
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