What is the value of (6tan((4pi)/7))/(tan^2((4pi)/7)-1) ?

The value of (6tan((4pi)/7))/(tan^2((4pi)/7)-1) is -1.44472…

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(6tan((4pi)/7))/(tan^2((4pi)/7)-1)

\frac{6 tan ( \frac{4 π}{7} )}{tan ^{2} ( \frac{4 π}{7} ) - 1}

- 1.44472 \dots

Solution steps

\frac{6 tan ( \frac{4 π}{7} )}{tan ^{2} ( \frac{4 π}{7} ) - 1}

Refine to a decimal form

= - 1.44472 \dots

cos (\frac{7 π}{15})

cos (\frac{11 π}{12}) cos (\frac{3 π}{4}) + sin (\frac{11 π}{12}) sin (\frac{3 π}{4})

9 sin (\frac{π}{2}) + 9 cos (\frac{π}{2})

50 \cdot cos (4 0^{\circ})

arcsin (0.375)

What is the value of (6tan((4pi)/7))/(tan^2((4pi)/7)-1) ?
The value of (6tan((4pi)/7))/(tan^2((4pi)/7)-1) is -1.44472…