Find all x that satisfy the given equation for 0<_x<2pi. Select all that apply. 2 cos^2x+cos x=0
1 answer:
Answer:
x=0 or 2pi/3
Step-by-step explanation:
2 cos^2x+cos x=0
cos x(2cos x+1)=0
cos x=0 or 2cos x+1=0
x=0 or cosx=-1/2
x=0 or 2pi/3
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