A) \[\frac{{{\theta }_{2}}+{{\theta }_{1}}}{2}\]
B) \[\frac{{{\theta }_{1}}}{10}+\frac{9{{\theta }_{2}}}{10}\]
C) \[\frac{{{\theta }_{1}}}{3}+\frac{2{{\theta }_{2}}}{3}\]
D) \[\frac{{{\theta }_{1}}}{6}+\frac{5{{\theta }_{2}}}{6}\]
Correct Answer: B
Solution :
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