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**[SOLVED] sin function**

**1. Homework Statement**

My complex analysis book says, "from calculus, [itex]\sin \theta \leq \theta[/itex] for [itex]0 \leq \theta \leq \pi/2 [/itex]." Could someone please give me a better reason why that is true?

**2. Homework Equations**

**3. The Attempt at a Solution**