Solve:
`sin2theta+sin4theta=costheta+cos3theta`

Explanation

To solve the equation \( \sin 2\theta + \sin 4\theta = \cos \theta + \cos 3\theta \), we can follow the steps below:

### Step 1: Rearranging the Equation
We start by rearranging the equation to one side:
\[ \sin 2\theta + \sin 4\theta - \cos \theta - \cos 3\theta = 0 \]

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