In a right triangle, cosine of an angle is defined as which ratio?

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Multiple Choice

In a right triangle, cosine of an angle is defined as which ratio?

Explanation:
Cosine of an angle in a right triangle is the ratio of the length of the side that forms the angle to the hypotenuse. That adjacent leg is the one that touches the angle, while the opposite side lies across from the angle, and the hypotenuse is the longest side opposite the right angle. So cos(angle) equals adjacent over hypotenuse. The other common ratios are sine (opposite over hypotenuse) and tangent (opposite over adjacent), with secant being hypotenuse over adjacent.

Cosine of an angle in a right triangle is the ratio of the length of the side that forms the angle to the hypotenuse. That adjacent leg is the one that touches the angle, while the opposite side lies across from the angle, and the hypotenuse is the longest side opposite the right angle. So cos(angle) equals adjacent over hypotenuse. The other common ratios are sine (opposite over hypotenuse) and tangent (opposite over adjacent), with secant being hypotenuse over adjacent.

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