- Share this homework with your friends!

## Homework subject

Find the value of cos(pi/11)*cos(2pi/11)*cos(3pi/11)*cos(4pi/11)*cos(5pi/11)*cos(6pi/11) *cos(7pi/11) *cos(8pi/11)* cos(9pi/11)*cos(10pi/11)*cos(11pi/11)

## Homework progress

I tried combining the cos(pi/11) cos (2pi/11)cos(4pi/11) using sin(2^npi/11)/2^n sin(pi/11)

## 1 comment on this homework

## They need help!

*No homework found, post your homework now.*

pi is 180 so for the first one. cos(pi/11)=cos(180/11)