If `y=(sinx+cosecx)^2+(cosx+secx)^2` then the minimum value of `y,AAx – InterviewSolution

InterviewSolution

1.	If `y=(sinx+cosecx)^2+(cosx+secx)^2` then the minimum value of `y,AAx in R`, isA. 7B. 3C. 9D. 0
Answer» Correct Answer - C `y=(sin^2x-cos^2x0+2(sinxcosecx+cosxsecx)+sec^2x+cosec^2x` `=5+2+tan^2x+cot^2x` `=7+(tanx-cotx)^2+2` `:. t_("min")=9`

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