Algebra Examples

$\cos (\frac{3 π}{5}) \cos (\frac{7 π}{30}) - \sin (\frac{3 π}{5}) \sin (\frac{7 π}{30})$

Step 1

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

$\cos (\frac{3 π}{5}) \cos (\frac{7 π}{30}) - \sin (\frac{3 π}{5}) \sin (\frac{7 π}{30})$