In a right triangle, angle cap c measures 40 degrees The hypotenuse of the triangle is 10 inches long. What is the approximate length of the side adjacent to angle cap c ?

Use cosine because the adjacent side and hypotenuse are involved: cos(40°) = adjacent ÷ 10. Thus, the adjacent side is 10 × cos(40°) ≈ 7.7 inches, so the answer is 7.7 inches.

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