SOLUTION: Find all solutions to the equation. 2cos^(2)x+cosx=0 Write answer in radians terms of pi Example: x=pi/5 +2kpi, k∈ℤ or x= pi/7 +kpi, k∈ℤ

Algebra ->  Trigonometry-basics -> SOLUTION: Find all solutions to the equation. 2cos^(2)x+cosx=0 Write answer in radians terms of pi Example: x=pi/5 +2kpi, k∈ℤ or x= pi/7 +kpi, k∈ℤ      Log On


   

Question 1120994: Find all solutions to the equation.
2cos^(2)x+cosx=0
Write answer in radians terms of pi
Example: x=pi/5 +2kpi, k∈ℤ or x= pi/7 +kpi, k∈ℤ
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Let







or



So



or



Use the unit circle to find all of the angles where or


John

My calculator said it, I believe it, that settles it