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Find the minimum value of 2costheta+1/si...

Find the minimum value of `2costheta+1/sin theta+sqrt2tantheta`, where `theta` is acute angle.

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Now, using `A.M.ge G.M.`, we have
`(2costheta1/sintheta+sqrt2tantheta)/3ge(2costheta. 1/sintheta . sqrt2tantheta)^(1/3)`
`=2costheta+1/sintheta+sqrt2tan theta ge3sqrt2`
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CENGAGE-TRIGONOMETRIC FUNCTIONS -SINGLE CORRECT ANSWER TYPE
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