In a specific angle for a right triangle the cosine ratio is the ratio between the lengths of the adjacent side (side touching the angle) and the hypotenuse (longest side).
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cosine
its the cosine.. thanks to the dude up there i got it wrong and that was my answer for 4.1.3.
Ah, what a lovely question we have here. In a right triangle, the ratio of the adjacent side to the hypotenuse is called cosine. It helps us understand the relationship between the lengths of the sides and the angles of the triangle. Just remember, happy little ratios like these can help you create beautiful mathematical landscapes on your canvas of knowledge.
Its Tangent, APEX "The tangent of an angle is the ratio of the opposite leg length to the adjacent leg length."
Use trigonometry and the cosine ratio: cos = adj/hyp and when rearraged hyp = adj/cos