**Sec 2 Pi 4**. We learn why graphs of tan, cot, sec and cosec have a periodic gap in them (also known as a discontinuity). Consider the denominator (bottom) of this fraction.

We learn why graphs of tan, cot, sec and cosec have a periodic gap in them (also known as a discontinuity). Consider the denominator (bottom) of this fraction. If you get an error, double-check your expression, add. ctg (котангенс). sec (секанс). cosec (косеканс).

## We learn why graphs of tan, cot, sec and cosec have a periodic gap in them (also known as a discontinuity).

If you get an error, double-check your expression, add. ctg (котангенс). sec (секанс). cosec (косеканс). Consider the denominator (bottom) of this fraction. We learn how to sketch the graphs.

### We learn how to sketch the graphs.

If you get an error, double-check your expression, add. ctg (котангенс). sec (секанс). cosec (косеканс). Consider the denominator (bottom) of this fraction.

If you get an error, double-check your expression, add. ctg (котангенс). sec (секанс). cosec (косеканс). Consider the denominator (bottom) of this fraction.

### If you get an error, double-check your expression, add. ctg (котангенс). sec (секанс). cosec (косеканс).

Consider the denominator (bottom) of this fraction.

Consider the denominator (bottom) of this fraction.

Consider the denominator (bottom) of this fraction.