SOLUTION: Find all solutions to the equation. 2cos theta - 1 = 0 Write your answer in radians in terms of , and use the "or" button as necessary. Example: theta= 2pi/5+kpi, k∈z

Algebra ->  Trigonometry-basics -> SOLUTION: Find all solutions to the equation. 2cos theta - 1 = 0 Write your answer in radians in terms of , and use the "or" button as necessary. Example: theta= 2pi/5+kpi, k∈z      Log On


   

Question 888604: Find all solutions to the equation. 2cos theta - 1 = 0
Write your answer in radians in terms of , and use the "or" button as necessary.

Example: theta= 2pi/5+kpi, k∈z , or , theta = 8pi/7 + 2kpi, k∈z
I've tried to seek steps from other questions but have not found any just answers. I've gotten up to the point of cos theta = 1/2 but from there what do I do?
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Find all solutions to the equation. 2cos theta - 1 = 0
Write your answer in radians
***
2cos theta - 1 = 0
cos theta=1/2
theta=π/3+2πk, k=integer, 5π/3+2πk, k=integer