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# What Is the Definition of "sine?"

In math, the sine of an angle is defined as the length of the side of a right triangle opposite the acute angle divided by the length of the hypotenuse. The lengths of these sides can be determined through the Pythagorean Theorem.

Continue ReadingSine is a trigonometric function related to the functions cosine and tangent. Cosine is the opposite of sine in that it is equal to the length of the side of a right triangle adjacent to the acute angle divided by the length of the hypotenuse. The related tangent function is defined as the sine divided by the cosine.

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## How Do You Find the Cos Inverse?

A: The basic trigonometric functions sine, cosine, and tangent give the ratio between two sides of a triangle with a given angle. The inverse trig functions f... Full Answer >Filed Under: -
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## What Is Pythagoras Famous For?

A: Pythagoras is most famous for the Pythagorean Theorem, which shows the relationship between the length of the two legs of a right triangle and the length o... Full Answer >Filed Under: -
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## How Do You Find the Altitude of a Triangle?

A: The length of the altitude of a right triangle is equal to the geometric mean of the line segments of the hypotenuse. The geometric mean can be thought of ... Full Answer >Filed Under: -
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## How Do You Determine Cosine Values?

A: To determine the value of the cosine of an angle in a right triangle, divide the length of the side adjacent to the angle by the length of the hypotenuse. ... Full Answer >Filed Under: