radomes.openskiesproject.org
missaavidhi8k
missaavidhi8k missaavidhi8k
  • 31-07-2016
  • Mathematics
Answered

when is 2cos x + 1 >0 , < 0 AND = 0

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 31-07-2016

-1 < cos x < 1
-2 < 2cos x < 2
-1 < 2cos x + 1 < 3

For 2cos x + 1 > 0
0 < 2cos x + 1 < 3
-1 < 2cos x < 2
-1/2 < cos x < 1
-60 degrees < x < 120 degrees

Answer Link

Related Questions

The Egyptians modified the chariot in what two ways
What does an industrial hygienist do
Miranda has noticed that her muscles feel a little stiff when she stretches Which of the following exercises would be best for Miranda
What is the difference between vous chantez and vous êtes chantez
Who was a British leader who criticized Britains treatment of the American colonies
What makes Superman an example of a traditional archetypal hero Include examples from the reading to support your conclusion
Vonna scored 18 goals at soccer practice Her ratio of goals to misses was 37 How many times did she miss
suppose theta is an angle such that 180 find sintheta
Help for those 2 plz
three of the following statements accurately describe the views of John Wycliffe and John Hus which does not