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If `abs(cos theta{sin theta+sqrt(sin^2theta+sin^2alpha)})lek`, then the value of k

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If `abs(cos theta{sin theta+sqrt(sin^2theta+sin^2alpha)})lek`, then the value of k
A. `sqrt(1+cos^(2)alpha)`
B. `sqrt(1+sin^(2)alpha)`
C. `sqrt(2+sin^(2)alpha)`
D. `sqrt(2+cos^(2)alpha)`
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Correct Answer - B
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