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Assessment

In a right triangle, if one of the angles is 30 degrees, what is the ratio of the length of the side opposite the angle to the length of the hypotenuse?

In a right triangle, if the length of the adjacent side is 4 units and the hypotenuse is 5 units, what is the cosine of the angle?

What is the tangent of a 45-degree angle in a right triangle?