Find All Solutions to the Equation in the Interval [0 $\cos 4 x - \cos 2 x = 0$

question 118

Multiple Choice

Find all solutions to the equation in the interval [0, 2) .
- $\cos 4 x - \cos 2 x = 0$

• A) \(0 , \frac { 2 \pi } { 3 } , \frac { 4 \pi } { 3 }\)
• B) \(\frac { \pi } { 6 } , \frac { \pi } { 2 } , \frac { 5 \pi } { 6 } , \frac { 7 \pi } { 6 } , \frac { 3 \pi } { 2 } , \frac { 11 \pi } { 6 }\)
• C) \(0 , \frac { \pi } { 3 } , \frac { 2 \pi } { 3 } , \pi , \frac { 4 \pi } { 3 } , \frac { 5 \pi } { 3 }\)
• D) No solution

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