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What is the simplified value of   2 s i n 3   ?   ? s i n ? c o s ?   ?   2   c o s 3   ? \ \frac{2sin^{3}\ \theta\ - sin\theta}{cos\theta\ -\ 2\ cos^{3}\ \theta} ?

[SSC CPO 4 July 2017 Afternoon Shift With Answers]
A
B
C
D