Expand Using Sum/Difference Formulas sin((2pi)/5)cos((7pi)/20)+cos((2pi)/5)sin((7pi)/20)

$\sin (\frac{2 π}{5}) \cos (\frac{7 π}{20}) + \cos (\frac{2 π}{5}) \sin (\frac{7 π}{20})$

Step 1

Nothing further can be done with this topic. Please check the expression entered or try another topic.

$\sin (\frac{2 π}{5}) \cos (\frac{7 π}{20}) + \cos (\frac{2 π}{5}) \sin (\frac{7 π}{20})$