FS: Sine, Cosine, and Tangent Functions

Front

What is the sine function?

Back

The sine function, denoted as sin(x), is a trigonometric function that relates the angle x (in radians) to the ratio of the length of the opposite side to the hypotenuse in a right triangle.

Front

What is the cosine function?

Back

The cosine function, denoted as cos(x), is a trigonometric function that relates the angle x (in radians) to the ratio of the length of the adjacent side to the hypotenuse in a right triangle.

Front

What is the tangent function?

Back

The tangent function, denoted as tan(x), is a trigonometric function that relates the angle x (in radians) to the ratio of the length of the opposite side to the adjacent side in a right triangle. It can also be expressed as tan(x) = sin(x)/cos(x).

Front

What is the range of the sine function?

Back

The range of the sine function is from -1 to 1, inclusive.

Front

What is the range of the cosine function?

Back

The range of the cosine function is from -1 to 1, inclusive.

Front

What is the range of the tangent function?

Back

The range of the tangent function is all real numbers, (-∞, ∞).

Front

What is the period of the sine function?

Back

The period of the sine function is 2π radians.

Front

What is the period of the cosine function?

Back

The period of the cosine function is 2π radians.

Front

What is the period of the tangent function?

Back

The period of the tangent function is π radians.

Front

How do you find the sine of 90 degrees?

Back

sin(90°) = 1.