The cosine function is defined as the ratio of the adjacent side and hypotenuse of a right-angled triangle. Trigonometric Function Domain and Range: Cosine The trigonometric function sine’s domain and range are given by: We know that the sine function is the ratio of a right-angled triangle perpendicular and hypotenuse. Trigonometric Function Domain and Range: Sine There are six basic trigonometric functions: sin, cos, tan, cot, tan, cosec, and sec. The domain of trigonometric functions denotes the values of angles where the trigonometric functions are defined, whereas the range of trigonometric functions denotes the resultant value of the trigonometric function corresponding to a specific angle in the domain. The input and output values of trigonometric functions are the domain and range of trigonometric functions, respectively. What exactly are the domain and range of trigonometric functions? Depending on the region where the trigonometric function is not defined, some values are excluded from the domain and range of trigonometric functions. Angles in degrees or radians are the domain of trigonometric functions, and the range is a real number. ![]() ![]() ![]() The angle and the resultant value, respectively, define the domain and range of trigonometric functions. Sin, cos, tan, cot, tan, cosec, and sec are the six trigonometric functions.
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