(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Deduce that 0 ≤ ≤ 10/9 for all values of x.

2. Relevant equations

3. The attempt at a solution

Is it possible to sketch a graph for ? How?

Or is there any methods to find the max./min. value of ?

Please enlighten me....

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# Homework Help: Trigonometric inequality problem.

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