Guest

let 0 prove that sin(x) >= (2x)/pi.

let 0<= x <=90 degees.


  prove that sin(x) >= (2x)/pi.

Grade:11

2 Answers

jitender lakhanpal
62 Points
10 years ago

Dear aritra,

 between 0 to 90 value of 2x/∏ will be 0 to 1 so the and sin is increasing in the interval between 0 to ∏/2 from 0 to 1 

sinx - 2x/∏ is increasing we can check that from differentiation its value also lie between 0 to 1 

 

 

We are all IITians and here to help you in your IIT JEE preparation.

Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar : Click here to download the toolbar..  

jagdish singh singh
173 Points
10 years ago

 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free