SOLUTION: How do I find the possible angles for theta if the equation is cos theta=sin (theta/2)?

Question 756234: How do I find the possible angles for theta if the equation is cos theta=sin (theta/2)?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
How do I find the possible angles for theta if the equation is
cos theta=sin (theta/2)
cosx=sin(x/2)

square both sides

(2cos(x)-1)(cos(x)+1)=0
2cos(x)-1=0
cos(x)=1/2
x=π/3+2πn, 5π/3+2πn, n=integer
or
cos(x)+1=0
cos(x)=-1
x=π+2πn, n=integer

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