Sum of Trigonometric Ratios in Terms of Their Product
The period of...
Question
The period of the function f(x)=|sinx|−|cosx||sinxcosx| is
A
π2
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B
2π
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C
π
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D
none of these
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Solution
The correct option is Cπ f(x)=|sinx|−|cosx||sinxcosx| =|sinx|−|cosx|∣∣122sinxcosx∣∣=|sinx|−|cosx|∣∣12sin2x∣∣ As period of |sinx|,|cosx| is π, and period of |sin2x| is π2. Therefore period of f(x) is π