Math, asked by s2912, 1 year ago

find minimum value of
27 {cosec}^{2} x + 3 {sin}^{2} x


Gaurav3911: 27 is the answer?
s2912: i dont know the ans

Answers

Answered by Gaurav3911
3
using A.M.>G.M.
minimum value is 18
Attachments:

s2912: a=sin²x so sinx=√3
s2912: sinx lies btw -1,1
s2912: √3 >1
Gaurav3911: sorry i had left 6 in 6a so i was not getting root
s2912: no prblm
Gaurav3911: have you tried it by minima
s2912: nopes
Gaurav3911: post this on gradeup
s2912: i have already posted this question i guess let me check
s2912: and i asked one of my frnd today so i posted this quest as a mcq
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