Given that 0 < sin x < x is true for 0 < x < π/2.(adsbygoogle = window.adsbygoogle || []).push({});

From the above, can we conclude that 0 < sin (x/2) < x/2? How about 0 < sin (x/5) < x/5? Why?

How about 0<sin 3x < 3x ? Why?

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# I Sin x < x

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