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What is the simplified value of   3 c o s e c 2 ? + 5 1 + t a n 2 ? ? 2 c o s 2 ? \ \frac{3}{cosec^{2}\theta}+\frac{5}{1+tan^{2}\theta}-2cos^{2}\theta ?

[SSC CPO 3 July 2017 Afternoon Shift With Answers]
A
B
C
D