JEE Math Practice Question
The number of elements in the set $$S=\left\{\theta \in[0,2 \pi]: 3 \cos ^{4} \theta-5 \cos ^{2} \theta-2 \sin ^{6} \theta+2=0\right\}$$ is :
- A.9
- B.8
- C.12
- D.10
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