Please answer this question with explanation of pqoqpqiqpqiqpaiapqo

Solution:
Given expression is 3-cos2θ.Value of cos2θ lies between,0cos2θ1So, maximum value of 3-cos2θ=3-0=3and, minimum value of 3-cos2θ=3-1=2So,  23-cos2θ3
Hence, the correct answer is option (b)

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