# There is a vivid representation of trigonometric functions—the lines of trigonometric functions.

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# The lines of trigonometric functions. Concept

# There is a vivid representation of trigonometric functions—the lines of trigonometric functions.

**The sine line** of angle α is the ordinate of point М (у of point М) (МК).

**The cosine line** of angle α is the abscissa of point М (х of point М) (ОК).

**The tangent line** is the tangent to point A.

**The tangent line** of angle α is the ordinate of point В (у of point В) (АВ).

**The cotangent line** is tangent to point S.

**The cotangent line** of angle α is the abscissa of point Р (х of point Р) (SP).

**The secant line** is OB.

**The cosecant line** is OP.

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The lines of trigonometric functions

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