How to find the missing side of a triangle using cosine

The video tutorial emphasizes the importance of having a scientific calculator for solving trigonometric problems. It guides students through identifying triangle sides, specifically the hypotenuse, opposite, and adjacent sides. The tutorial demonstrates using the cosine function to solve for an unknown side length, ensuring the calculator is set to degree mode. The process involves calculating the cosine of a given angle and multiplying it by the hypotenuse to find the adjacent side. The tutorial concludes with a recap on identifying the adjacent side and rounding the result.

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