Find the solution of cos(2x)−cos(x)=0 in the interval [0;2π)
Find the solution of in the interval
Answer & Explanation
Beginner2021-12-18Added 33 answers
We remember that And we have Now, get everything in terms of cosine: Therefore, Now, solve Implies that , as we're working in . And it's the only value yielding one for cosine. Implies that as these values return for cosine in the given interval.
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