find all solution for the 2cosx-1=0

Asked on by tarfa

2 Answers | Add Yours

cosinusix's profile pic

cosinusix | College Teacher | (Level 3) Assistant Educator

Posted on

`2cos x-1=0 `

`<=>cos x=1/2`

`<=>x= pi/3 +2 kpi (k in ZZ) or x=-pi/3+2kpi (k in ZZ)`


Set of solutions `pi/3+2kpi or -pi/3+2kpi (kin ZZ)`

rcmath's profile pic

rcmath | High School Teacher | (Level 1) Associate Educator

Posted on




`x=Pi/3+2kPi` for k=0,1,2,...



We’ve answered 319,819 questions. We can answer yours, too.

Ask a question