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If θ is in the interval [0, 2π) and cos(θ) = √ 2/2 , then θ...

If θ is in the interval [0, 2π) and cos(θ) = √ 2/2 , then θ must be π/4 .

State true or false.

Math   Precalculus   
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Answer #1

Hence given statement that theta must be π/4 is wrong, because there exists two solutions in the given interval.

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