Question

As x = (-π/2)-, sec(x) = ?

Answer 1

\[\sec(x) = \frac{ 1 }{ \cos(x) }\]
\[\cos(-\pi/2)=\cos(\pi/2) = 0\]

Answer 2

secant of -pi/2 would be undefined.

Answer 3

@DanJS So the point of reference is 90 degrees, with the point being (0,1). We are looking at the x value (cos)?

Answer 4

the angle here is \[\frac{ -\pi }{ 2 } ~~or~~ \frac{ 3\pi }{ 2 }\]

The coordinate of the point on the unit circle corresponding to that angle is
(x,y) = (0, -1)

Answer 5

Did you mistype some of the question? what is that - after the angle?

Answer 6

It's as x = \[(\frac{ -\pi }{ 2 })-\]

sex(x) = ?

Answer 7

@DanJS