That's TANNING!

Algebra Level 2

What is the value $\tan \frac{\pi}{7}$ $\tan \frac{2\pi}{7}$ $\tan \frac{3\pi}{7}$

\sqrt5

\sqrt {3}

0.356

\sqrt {7}

2 solutions

Finn Hulse
Apr 27, 2014

Hint: use a calculator. ;)

I Did The Same

Anand Raj - 7 years, 1 month ago

That's not what I did, it's just one way you could do it. :D

Finn Hulse - 7 years, 1 month ago

What did you do ?

Niranjan Khanderia - 7 years, 1 month ago

@Finn Hulse -What did you do?

Krishna Ar - 6 years, 11 months ago

@Krishna Ar – Expanded the tangents into a sine over cosine and then expanded those and the denominators cancelled out. Kind of basic. :D

Finn Hulse - 6 years, 11 months ago

@Finn Hulse – and then after expanding what did you do ,coz i got struck there !!

Rishabh Jain - 6 years, 11 months ago

I Did The Same

Niranjan Khanderia - 7 years, 1 month ago

How does one actually do this?

Narahari Bharadwaj - 6 years, 12 months ago

Aditya Sky
Apr 14, 2016

This question involves some really fascinating mathematics, one of them being Complex Numbers.