en:tan [BASIC 256 - Language Documentation]

# BASIC 256 - Language Documentation

en:tan

## Tan (Function)

### Format

tan ( numeric_expr )

returns float_value

### Description

Computes the tangent of angle in radians.

### Note

The tan function does not produce an exact result.

### Example

    clg
    color black
    # draw a line across the graphic output
    line 0,150,300,150
    # where do we start
    lastx = 0
    lasty = tan(0) * 50 + 150
    # now step across the line and draw
    for x = 0 to 300 step 5
       angle = x / 300 * 2 * pi
       y = tan(angle) * 50 + 150
       line lastx, lasty, x, y
       lastx = x
       lasty = y
    next x

Draws

### See Also

Abs, Acos, Asin, Atan, Ceil, Cos, Degrees, Exp, Float, Floor, Int, Log, Log10, Radians, Rand, Sin, Sqr, Tan

en/tan.txt · Last modified: 2014/02/08 11:02 by admin