Search results
In mathematics, sine and cosine are trigonometric functions of an angle. The sine and cosine of an acute angle are defined in the context of a right triangle : for the specified angle, its sine is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse ), and the cosine ...
Learn how to calculate sine, cosine and tangent of any angle using a right triangle. See examples, graphs, animations and exercises on these trigonometric functions.
Learn what sine is, how to find its values using right triangles or unit circle, and how to use a calculator to compute it. See examples, commonly used angles, and reference angles for sine.
Definition of. Sine. more ... In a right angled triangle, the sine of an angle is: The length of the side opposite the angle divided by the length of the hypotenuse. The abbreviation is sin sin θ = opposite / hypotenuse.
Sine is a trigonometric function that measures the angle of a point on a circle. Learn how to define, calculate, and manipulate sine using formulas, graphs, and examples from Wolfram MathWorld.
Learn how to calculate the sine of an angle in a right triangle using the formula sin x = O H, where O is the opposite side and H is the hypotenuse. See also how to use the inverse sine function arcsin, graph the sine function and find its derivative.
The classical definition of the sine function for real arguments is: "the sine of an angle in a right‐angle triangle is the ratio of the length of the opposite leg to the length of the hypotenuse."
