Learn how to solve a trigonometric equation with cosine

The video tutorial covers trigonometric functions, focusing on isolating variables using inverse operations. It explains simplifying square roots and rationalizing denominators. The unit circle is used to find angles corresponding to specific cosine values, with a focus on π/4. The tutorial identifies all solutions for cosine values between 0 and 2π and concludes with a preview of further explanations using a computer.

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