What Sin, Cos, and Tan are, your choice.
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A right triangle is a triangle with a single 90ﾟ angle.
The side that is opposite to that angle is known as the hypotenuse.
Each of these terms is a ratio that can be determined from one of the 2 other, non right angles.
The sin is the ratio of the opposite side over the hypotenuse. The cosign is the ratio of the adjacent side over the hypotenuse. The tangent is the ratio of the opposite side over the adjacent side.
So if you have a right triangle whose other angles are 30ﾟ and 60ﾟ, the sin of 30ﾟ will be the length of the smaller side over the length of the hypotenuse.
The reason this is so useful is because it allows you to indirectly determine the length of any of those side’s based on knowledge of angles and the length of other sides.
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