Because that is accepted definition. The sine is opposite over hypotenuse, or Y in the unit circle. The cosine is adjacent over hypotenuse, or X in the unit circle. The tangent is sine over cosine, etc. For more information, please see the related link below.
The ratio between the opposite side and the hypotenuse in a right triangle is known as the sine of the angle opposite the opposite side. Mathematically, this can be expressed as ( \sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}} ). Therefore, for a given angle ( \theta ), this ratio is equal to the sine of that angle.
It is the sine ratio.
It is the Sine(Sin) ratio. Sin(angle) = o/h
The sine of 90 degrees is equal to 1. This is because, in the context of a right triangle, the sine function represents the ratio of the length of the opposite side to the hypotenuse. At 90 degrees, the opposite side is equal to the length of the hypotenuse, resulting in a ratio of 1.
If you have a right triangle, the sine of an angle is the ratio of the opposite side to the hypotenuse.
The ratio between the opposite side and the hypotenuse in a right triangle is known as the sine of the angle opposite the opposite side. Mathematically, this can be expressed as ( \sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}} ). Therefore, for a given angle ( \theta ), this ratio is equal to the sine of that angle.
sine
Opposite over hypotenuse. Sin=opposite/hypotenuse cos=adjacent/hypotenuse tan=opposite/adjacent
The 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.In terms of ratios, the sine of an angle is defined, in a right angled triangle, as the ratio of lengths of the opposite side to the hypotenuse.
It is the sine ratio.
It is the Sine(Sin) ratio. Sin(angle) = o/h
The sine of 90 degrees is equal to 1. This is because, in the context of a right triangle, the sine function represents the ratio of the length of the opposite side to the hypotenuse. At 90 degrees, the opposite side is equal to the length of the hypotenuse, resulting in a ratio of 1.
False because sine ratio = opposite/hypotenuse
Sine = opposite / hypotenuse
a) sine
If you have a right triangle, the sine of an angle is the ratio of the opposite side to the hypotenuse.
It is the 'sine' ratio for a right angle triangle