Mathematics

Mathematics

Problem

Which of the following inequalities is true for every real number tt? a) 0≤sin⁡t≤10 \le \sin t \le 1 b) sin⁡t≤t\sin t \le t c) −1≤sin⁡t≤1-1 \le \sin t \le 1 d) sin⁡t=t\sin t = t for all sufficiently small tt

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