manishpkhrl88 manishpkhrl88
  • 14-10-2019
  • Mathematics
contestada

Prove that: Cos2pi/7+cos4pi/7+cos8pi/7=-1/2

Respuesta :

Аноним Аноним
  • 14-10-2019

Answer:

1. use a calculator to help

2. that's wrong because it equals 1.333...

Answer Link

Otras preguntas

how do you think the atoms in metal element are different from those in nonmetals or metalloids
A strain of quick-growing rice imported from southeast Asia led to:A) Vietnam's economic takeover of ChinaB) a population growth in ChinaC) less meat consumptio
Is avertical line up and down or left to right
5 situati de lipsa de respect in familie​
who wants to see my t*ts
Find the equation of the line that padded through (1,3) and is perpendicular to y=2x+3. Leave your answer in the form ax+by=c where a, b and c are integers.
5.04 Apostrophes Assignment......Help needed pls
Which of the following is a wide ranging branch of media technology that covers everything from cellphones, to websites, to content delivery? A. B. Internet Ser
Decide whether each feature is associated with a wiki or a web page. requires knowledge of HTML and other coding to create requires a registered domain name can
I WILL MARK BRAINLIEST PLS HELP