Trigonometry Examples

$\frac{\tan (\frac{2 π}{5}) + \tan (\frac{4 π}{15})}{1 - \tan (\frac{2 π}{5}) \tan (\frac{4 π}{15})}$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\frac{\tan (\frac{2 π}{5}) + \tan (\frac{4 π}{15})}{1 - \tan (\frac{2 π}{5}) \tan (\frac{4 π}{15})}$

Decimal Form:

$- 1.73205080 \dots$