# Trigonometric Functions - Sin, Cos, Tan, Csc, Sec and Cot

Videos, worksheets, solutions and activities to help Algebra 2 students learn about the trigonometric function: Sin, Cos, Tan and the reciprocal trigonometric functions Csc, Sec and Cot.
Reciprocal Trigonometric Functions :
There are three reciprocal trigonometric functions, making a total of six including cosine, sine, and tangent. The reciprocal cosine function is secant: sec(theta) = 1/cos(theta). The reciprocal sine function is cosecant, csc(theta) = 1/sin(theta). The reciprocal tangent function is cotangent, expressed two ways: cot(theta) = 1/tan(theta) or cot(theta) = cos(theta)/sin(theta).
How to define the reciprocal trigonometric functions, the reciprocal identities, and the Pythagorean identities using the unit circle.
Fundamental Trigonometric Identities: Reciprocal, Quotient, and Pythagorean Identities
Use reciprocal, quotient, and Pythagorean identities to determine trigonometric function values.

Trigonometry Functions - Sin, Cos, Tan, Csc, Sec and Cot
Tangent, cotangent, secant, and cosecant of any angle

This tutorial covers the reciprocal identities and shows them in various forms.

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