SOLUTION: Solve for x: 3 + cos 2x = 7/2; only include answers on [0, 2π]
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Question 1141649: Solve for x: 3 + cos 2x = 7/2; only include answers on [0, 2π]
Found 2 solutions by josmiceli, Alan3354:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The angles whose cosine = are
in the 1st and 4th quadrants.
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and
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Solve for x: 3 + cos 2x = 7/2; only include answers on [0, 2π]
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3 + cos(2x) = 7/2
cos(2x) = 1/2
2x = pi/3, 5pi/3, 7pi/3, 11pi/3
x = pi/6, 5pi/6, 7pi/6, 11pi/6
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