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seropon [69]
3 years ago
11

Find the solutions of each equation on the interval [0, 2π)​

Mathematics
1 answer:
Schach [20]3 years ago
4 0

Answer/Step-by-step explanation:

Factor this. GCF=2

2(2cos2x+cos x-1)=0

2(2cos x -1)(cos x+1)=0 Set each factor equal to zero and solve

2cos x -1=0 Add 1 to both sides

2cos x =1 Divide by 2

cos x =1/2

x=π/3

x=5π/3

cos x+1=0 Subtract 1 from both sides

cos x=-1

<u><em>x = π</em></u>

<u><em></em></u>

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