# Math Help - trigonometry

1. ## trigonometry

what is the value of sin Π/5 and cos Π/5?

2. Originally Posted by maeca
what is the value of sin Π/5 and cos Π/5?
$\sin {\frac{\pi}{5}}= \frac{\sqrt{10-2 \sqrt{5}}}{4}$

$\cos {\frac{\pi}{5}}= \frac {\sqrt{5}+1}{4}
$