SOLUTION: Solve the equation in the interval from 0 to 2pi. 3 cos 4theta = -2 Please help! Textbook does not explain this well.

SOLUTION: Solve the equation in the interval from 0 to 2pi. 3 cos 4theta = -2 Please help! Textbook does not explain this well.

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Question 1015188: Solve the equation in the interval from 0 to 2pi.
3 cos 4theta = -2
Please help! Textbook does not explain this well.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Solve the equation in the interval from 0 to 2pi.
3 cos 4theta = -2
------------
Divide by 3.
Use a calculator to find 4*theta.
Divide by 4.
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