### Home > A2C > Chapter 13 > Lesson 13.1.1 > Problem 13-8

13-8.

Show that sin() only if

*is an integer multiple of*

*π*.

*12-8 HW eTool*(Desmos) Homework Help ✎

Graph the equations = sin (

*=*

*) 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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