Question

why is tan 90 undefined

Answer 1

Well, try the known identity
\[\Large \tan(\theta) = \frac{\sin(\theta)}{\cos(\theta)}\]

Answer 2

what does this mean?

Answer 3

a triangle can only have one right angle

Answer 4

Try substituting \(\large \theta = 90 ^o\)

Answer 5

Is it because it is perpendicular?

Answer 6

Not so hot on why....sohcahtoa?

Answer 7

tangent can be viewed as the slope of a line y/x


as the angle \(\alpha\) gets larger and larger, it approaches 90 degrees.

the slope of the line, it we let x=1, increases towards infinity, which is not a definable value.