In a right triangle, the sine of an angle equals the ratio of which sides?

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Multiple Choice

In a right triangle, the sine of an angle equals the ratio of which sides?

Explanation:
Sine of an angle in a right triangle is the ratio of the length of the side opposite the angle to the length of the hypotenuse. The opposite side is the one across from the angle, and the hypotenuse is the longest side, opposite the right angle. So sine equals opposite divided by hypotenuse. The other common ratios involve different sides: cosine uses adjacent over hypotenuse, and tangent uses opposite over adjacent. For example, if the opposite side is 3 and the hypotenuse is 5, the sine is 3/5 = 0.6.

Sine of an angle in a right triangle is the ratio of the length of the side opposite the angle to the length of the hypotenuse. The opposite side is the one across from the angle, and the hypotenuse is the longest side, opposite the right angle. So sine equals opposite divided by hypotenuse. The other common ratios involve different sides: cosine uses adjacent over hypotenuse, and tangent uses opposite over adjacent. For example, if the opposite side is 3 and the hypotenuse is 5, the sine is 3/5 = 0.6.

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