You can
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90 degrees =
/2 or about 1.5708
If you go that many digits on the x-axis, there is no point that is determined by the graphed line. This is either called inifinity or undefined.
Other undefined values: 3
/2, 5
/2, 7
/2, -
/2, -3
/2, -5
/2 there are an infinite amount of undefined values.
The undefined values can be given as: (where
is an integer)
/2 +-
k
If the value of a degree is a little below 90 degrees, then the tangent of that angle would be great! If the value of the degree is a little over 90 degrees, then the tangent of that angle would be extremely small (in the negatives.) The graph shows this easily. At
/2, there is no point on the graphed line that results from tan(
/2).
Just look at this piece:
y ~> +
, x ~> +
y ~> -
, x ~> -
A little less than the undefined value of
/2 shows us that
is high. Vise versa for a little more.
(