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If 0 lt x lty lt pi ,then which one of t...

If `0 lt x lty lt pi` ,then which one of the following is correct?

A

`x-cos x gt y- cos y`

B

`x- cosx lt y- cos y`

C

` x+ cos x gty cos y`

D

` x+ cos x lt y + cos y`

Text Solution

Verified by Experts

The correct Answer is:
B
Given that `0 lt x lt y lt pi`
We have `x lt y rArr cos y lt cos x `
So, `x + cos y lt y + cos y `
` rArr x- cos x lty - cos y `
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