### Home > INT3 > Chapter 12 > Lesson 12.1.1 > Problem 12-7

12-7.

Show that if *x* is an integer multiple of *π*, then sin(2*x*) = 2sin(*x*). 12-7 HW eTool (Desmos). Desmos Accessibility Homework Help ✎

Graph the equations *y* = sin (2*x*) and *y* = 2·sin(*x*) on graphing paper or use Desmos calculator.

Where are the two equations equal?

Use the Desmos calculator below to graph the equations.

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