kailea2 kailea2
  • 04-02-2018
  • Mathematics
contestada

Cos x+ 2cosx + Sinx=0 solve the equation for the interval [0,2pi]

Respuesta :

Аноним Аноним
  • 04-02-2018
cos²(x) + 2cos(x) + sin²(x) = 0
 Note: cos²(x) + sin²(x) = 1
2cos(x) + 1 = 0
2cos(x) = -1
cos(x) = [tex]- \frac{1}{2} [/tex]
120 degrees and 240 degrees → [tex] \frac{2}{3} \pi [/tex] and [tex] \frac{4}{3} \pi [/tex]
Answer Link

Otras preguntas

$29,000;$4 decrease find the new amount given the original amount and the percent of change.
how did the enlightenment effect peoples thinking
The farmer count 58 feet all together and he has 22 animals that consists of pigs and ducks and how do I graph this with two different equations
PLEASE HELP ME IM TRYING TO GET THIS DONE AND NOBODY IS HELPING ME Triangle ABC below is reflected over the y-axis. a What are the coordinates of the reflected
J’ai besoin d’ ______ stylo pour écrire
What is the expression in simplest radical form? √384
A large sac that stores water,salts and other materials for the cell is called a
in the story the outsiders why is ponyboy brave
5 5/9 -3 1/3 subtraction mix numbers
can someone summarize this story