Inspired by Sandeep Bhardwaj

Algebra Level 3

If 0<θ<π 0 < \theta < \pi , what is the minimum value of

4sin2θ+9sinθ? \frac{ 4 \sin ^ 2 \theta + 9 } { \sin \theta } ?


This problem is inspired by Sandeep Bhardwaj's problem.

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