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Number of solution of `e^(cot^2theta) + sin^2theta-2cos^2 2theta-4sintheta+4=0` in `[0, 10pi]` is.

Number of solution of `e^(cot^2theta) + sin^2theta-2cos^2 2theta-4sintheta+4=0` in `[0, 10pi]` is.

A.

2

B.

3

C.

4

D.

5
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