Precalculus Examples

$\frac{\tan (\frac{3 π}{5}) - \tan (\frac{13 π}{30})}{1 + \tan (\frac{3 π}{5}) \tan (\frac{13 π}{30})}$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\frac{\tan (\frac{3 π}{5}) - \tan (\frac{13 π}{30})}{1 + \tan (\frac{3 π}{5}) \tan (\frac{13 π}{30})}$

Decimal Form:

$0.57735026 \dots$