![]() ![]() “Adjacent side” is the side next to angle θ. The sine, cosine, and tangent of an acute angle of a right-angled triangle are defined as the ratio of two of three sides of the right-angled triangle.Īs we know, sine, cosine, and tangent are based on the right-angled triangle, it would be beneficial to give names to each of the triangles to avoid confusion. Each acute angle of a right-angled triangle retains the property of the sine cosine tangent. Read below to know what is a sine function, cosine function, and tangent function in detail.Ī right-angled triangle includes one angle of 90 degrees and two acute angles. The trigonometric functions also known as the circular functions, angle functions, or goniometric functions are widely used in all fields of science that are related to Geometry such as navigation, celestial mechanics, solid mechanics, etc. Each of the six trigonometric functions has corresponding inverse functions (also known as inverse trigonometric functions). The reciprocals of sine, cosine, and tangent are the secant, the cosecant, and the cotangent respectively. ![]() Sine, cosine, and tangent (abbreviated as sin, cos, and tan) are three primary trigonometric functions, which relate an angle of a right-angled triangle to the ratios of two sides length. ![]()
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