A right triangle consists of one angle of 90oand two acute angles.
Each acute angle of a right triangle has the properties of sine, cosine and tangent.
The sine, cosine and tangent of an acute angle of a right triangle are ratios of two
of the three sides of the right triangle.
The sine of the angle is the ratio of the length of the side opposite the angle divided
by the length of the hypotenuse.
The cosine of the angle is the ratio of the length of the side adjacent to the angle
divided by the length of the hypotenuse.
The tangent of the angle is the ratio of the length of the side opposite the angle
divided by the length of side adjacent to the angle.
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